Linux and PC Anywhere

I have a Linux RedHat version 7.1 server. I'm using it as a file server and a proxy server on a small network with Windows workstations. The server is multi-homed and connected to a DSL router. I'm using Squid as my proxy and ipchains for my firewall. I would like to setup on a PC Anywhere host on one of the workstations so that I can connect to it through the Linux server from home. I have spent several hours surfing trying to find answers but so far the answers have been a little vague. Any help would be appreciated.