Ok, I bought XP professional by mistake. I am not administrator saavy. So, I have recently tried to send photos over MSN Messenger, and the old Windows messenger as well, and always get a message that read something like, "unable to transfer files. Ask your network administrator or your ISP" (extremely loose paraphrasing). I had thought it was my Norton firewall which I disabled, and that didn't work. I called Verizon DSL and they said it should be fine. I can only think its something with XP Pro, which I do not know how to configure. Something about TCP ports, but I cant find them. Any suggestions? Thanks. PCSOFT maintains many useful files for download visit our download web page at: http://freepctech.com/downloads.shtml