We have 3 PC's that were all networked just fine running XP Pro. Just upgraded one of them to x64 and now it won't talk to the others - it sets everything up OK and thinks it's OK (no errors etc) but it won't show up on the other machines, and they won't show up on it either. Have tried all the usual firewall settings and have got the proper 64bit drivers installed for the NIC and mobo etc.
Any ideas?
Any ideas?