I am having trouble joining a multiplayer internet game. It says wrong version (grpcrcl.35) for all games I try joining. Do I need a patch for the game or what should I do?

yep get the 1.35 patch don't have the adress handy, but ghostrecon.net/downloads should have it

I've just found it and download started a min ago.
Not sure if it will work, but this may help.

Enjoy

http://www.fileshack.com/file.x/9201/Ghost+Recon+3:+Adv...arfighter+1.35+Patch

whrm, we live in GRAW2 times now, I'm sorry to say so, but GRAW2 has an auto update so no searching anymore. And those playing GRAW1 will find patch 1.35 I'm sure.