Right now I use a VPN to connect to our corporate network. I would like to set the VPN to tunnel company data through the VPN tunnel, and everything else through the internet. Is this possible, say thorugh advanced routing table entries or something?

I know I can get a router that supports DD-WRT and set it up to do this with its built in PPTP client, but if there's a free way that would be better.

Ideas? Thanks!