MT4 Through a VPS

Can anyone tell me how it is possible to use MT4 via a VPS using a Mac?

If the VPS host OS is Windows 2003 Enterprise Server, how will using a mac to access the VPS affect my use of MT4?

cheers

You'd install MT4 on your windows 2003 VPS.

You would connect to your windows 2003 VPS from your mac using an RDP client. A quick google found this:
http://www.microsoft.com/mac/remote-desktop-client