Nevermind, got it working. Just had to enable sharing/discovery setting and the public folders became accessible. Both computers saw each other automatically (wow!

). When I clicked onto the 7 system from XP, it asked for user/pw. I entered the user/pw of the 7 system and it worked, now copying files.
At my place I wasn't able to get it working, and it may be a router issue. I'll have to go check that out.
False alarm... ! Sorry, this thread can be deleted