I had trouble with the first version and XP. I use version 1.5.1. it works fine
Go Go P800
MotorolaCD30,Nokia6150,Nokia3210,Nokia3310,Nokia 3330,Nokia 7110,Nokia 6210,Nokia 6310,
Nokia 6510,Nokia 6610,Nokia 8310,Sony ericsson 520,Sony ericsson T39,sony ericsson T68i,Nokia 6310iNokia 7250,SONY ERICSSON P800
Some programs used by P800 uses TCT ports which could be blocked by your personal firewall. I'm not familiar with the McAfee stuff because I've never use it. I use Kerio Personal Firewall and I don't have any problems with it. I can install, backup or synchronize my contacts with my notebook like a charm. I use XP Pro and PC Suite 1.5.