Rerouting packets

Hi, I need to write a simple application that would do simple rerouting under Win2k Professional. I think this is what VPN is for, but it only allows one connection per computer (on Win2k Prof). What I need to do, is set up "translators" in each computer (more than 2) that would modify the outgoing LAN packets and redirect them to a new address (WAN IP) while storing the original destination in the packet (which is set back as the destination at the receiving end by another "translator"), basically expanding a LAN connection to a WAN connection. I read a "similar" thread that should still be visible on the first page of this forum (called "Editing packets") and I was wondering if I'd really have to deal with hooks and everything. Maybe I'm missing the point here - that's why I'm asking before writing any code - but can I read outgoing packets from a local port, modify (how?) them, or delete (how?) the original packet and send a modified copy instead? Most importantly, is the above at all 100% necessary or, just by chance, does anyone know of some simple (free) application that would do the trick that I haven't come across on the Net yet? Thanks, Crispy edit - nitty gritty [edited by - crispy on September 27, 2002 12:59:23 PM]