Here is a c/p of a review I found on the net.

SlingPlayer software for Windows XP/2000 PCs is included on a CD that comes with the products, but you're always better off getting the latest build from Sling Media's Web site. The long-awaited Mac OS X version of the SlingPlayer will be available in October, according to Sling Media; it's a universal binary, so it will work on older PowerPC-based Macs as well as newer Intel models. (Yes, Mac fans, it does exist--we've seen it running on a MacBook.) Windows or Mac, laptop or desktop, just be sure the computer has access to a high-speed connection (Ethernet or Wi-Fi)--dial-up won't cut it.

If you'd prefer to watch your TV on a smaller device, Sling has you covered. SlingPlayer Mobile software is available for Pocket PC (touch-screen devices running Windows Mobile 2003 or 5.0, such as recent Dell Axim and HP iPAQ handhelds, as well as phones such as the Palm Treo 700w, the Audiovox 6700, and the Samsung i730) and Windows Smartphone (non-touch-screen phones running Windows Mobile 5.0, such as the Motorola Q and T-Mobile SDA). Each mobile software package must be purchased on Sling's Web site for a one-time fee of $30, but you can try before you buy--just download the 30-day trial software. Just like the PCs, the mobile devices need to have access to a broadband connection--be it Wi-Fi or a high-speed cellular network (EVDO on Verizon or Sprint, or EDGE/UMTS/HSDPA on Cingular, for instance).

Don't have a Windows Mobile device? Sling's Web site explains that the company is evaluating the feasibility of creating SlingPlayer software for other platforms, such as Palm, RIM Blackberry, Symbian, J2ME, and BREW. In the absence of any official announcement, though, such plans remain entirely theoretical.

Before you can watch your TV shows from 2,000 miles away, of course, you have to get your Slingbox up and running. The Slingbox Pro is the largest model in the line, but it's still modestly sized as far as home-theater components go: 1.5 inches high by 14 wide by 5 deep. For some reason, Sling chose to make the Pro model red, unlike the unassuming black of the smaller Slingbox Tuner and A/V models, though the color is tempered somewhat by the tapered, smoked-gray housing. Fortunately, once you connect the Slingbox to your home A/V system, you never have to see it again; the always-on device can be tucked away in the depths of your TV stand--or even in an enclosed cabinet--where it will toil away indefinitely.

The rear of the Slingbox Pro is crammed with A/V inputs and outputs: one composite A/V, one S-Video, one RF coaxial, and one input that looks suspiciously like an HDMI port but isn't (more on that later). The physical setup is quick and logical. Simply hook up the video source, be it cable box, satellite box, DVR, DVD player, or the like, to the Slingbox's composite, S-Video, or RF cable inputs. There's also an included two-headed IR blaster that you can use to control the attached devices remotely--change channels, pause, play, fast-forward, rewind, and so forth. In addition, the Slingbox Pro, like the original Slingbox but unlike its two less-expensive siblings, has pass-through outputs for all of its audio and video connections. The necessary cable interconnects are included, so the Pro can integrate seamlessly into your system without the need for any major rewiring.

About that "HDMI" port: despite its appearance, it won't accept HDMI signals. Instead, its sole purpose is to interface with the proprietary dongle that provides component video in and out. When connected, the $50 dongle allows the Slingbox Pro to accept all standard HDTV resolutions, namely 720p and 1080i--but not 1080p; not that it matters since very few component 1080p sources are available.

The final step in connecting the Slingbox Pro is to get it on your home network. Your only option to do so is via a wired Ethernet cable. If you don't have a network connection nearby, you'll need to opt for a bridging solution: powerline Ethernet extenders or a wireless-to-Ethernet bridge. Sling offers its own set of powerline adapters, dubbed SlingLink, for less than $100; we used a pair of older, significantly less expensive Netgear XE102 adapters with no problem.

Once you have the Slingbox base station wired up and ready to go, you'll need to install the viewing software on a PC; the initial setup must be done within your home's local network. The software follows a bulletproof, wizard-style install path; if you have a plug-and-play (UPnP) router, the whole process should take just a few minutes. The latest iteration of the SlingPlayer software setup includes a great video optimization wizard, which automatically optimizes the software settings to your PC's CPU and graphics-card capabilities. Once it's up and running, the software gives you a video window not unlike that of QuickTime or Windows Media Player, but which includes channel-changing controls. If you've connected the Slingbox to a TiVo, a cable or satellite box with a built-in DVR, or even a DVD recorder, you'll also get video-transport controls: pause, rewind, fast-forward, and so on.