and I did it! for anyone who needs to know taken from slingbox's website
Slingbox PRO-HD system requirements for HD and SD streaming
The Slingbox PRO-HD requires certain minimums of computer performance, as well as network capacity, for best HD and SD streaming. Here are the specifics.
Streaming high-definition (HD) video requires a lot more network capacity and computing power than streaming standard definition (SD) video does. The minimum system requirements for the Slingbox PRO-HD vary considerably for streaming HD versus SD content:
Network Bandwidth:- HD Streaming: 3 Mbps or higher
- SD Streaming: 600 Kbps or higher
- Mobile Streaming: 150 Kbps or higher
Microsoft Windows:- HD Streaming: Intel 2.4 GHz Core 2 Duo class processor or equivalent with 2 GB of RAM. Video acceleration support desirable on graphics card
- SD Streaming: Pentium 4 class or equivalent with 256 MB RAM
- Operating System: Microsoft Windows XP, Windows Vista, or Windows 7 with latest updates
- Browser Support: Internet Explorer Version 7 or higher, Firefox Version 3 or higher
Mac OS:- HD Streaming: Intel 2.8 GHz Core 2 Duo class processor or equivalent with 2 GB of RAM
- SD Streaming: Intel-based Mac with 2 GB of RAM
- Operating System: Mac OS 10.5.7 (Leopard) or later
- Browser Support: Firefox Version 3 or higher, Safari Version 4 or higher
If those minimums don't provide the viewing experience that you want, your setup might require more computing power.