Setting up a VPN

I need to set up a VPN as I'm going to working remotely in about 4 weeks time.  Totally confused with what I've read on the net and I am no closer to finding a solution.

The PDC (and email) is windows 2003, file server win2003, db server 2k.  All connected through a HP switch with the gateway being a linksys RV082 to an SDSL modem.  the remote PC will be XP pro.

I've followed the setup intructions to do it on the firewal (RV082) using the quick connect client software without success and have read a lot of people having trouble with it so that doesn't fill me with confidence.

I believe I do have the hardware necessary to set it up but where to start?

Can I do it with the built in OS software?

I did have a quick look at setting up the RRAS on the PDC but it said  it couldn't continue as the machine only had 1 NIC -  do I need to put in another NIC to get ths to work?

Please, somebody must be able to explain in plain english what I need to have and what I need to do to get what I thought would a simple procedure to setup.