is one solution and probably best choice. Of course there's VNC client you can use, but can also remote using a standard web browser with Java plug in, which is handy.
Another is pcAnywhere 12. The CD includes files for Linux and MacOS X. I recently tinkered with it and got it to work on Mandriva 2007 and 2006. But it's not as robust as standard Windows version and not as fast as VNC. But it can work.