Want to play poker from work, eh? This product is great for that. You will need a high-speed connection on your home computer that is always on.

You will need to configure your home computer's firewall to allow the program to access the internet - it should automatically prompt you to do this when you install it. Performance is not affected by any firewalls at the offsite computer.

I think GoToMyPC costs like $20/month, with a free evaluation period. There is another free product called WINVNC which does excactly the same thing, but it is not as user-friendly and is difficult to setup through firewalls and routers.