i have adsl, the upload speed has been varying, but it's around 15 kb/second
PM means Private Message, you can send or receive private messages in this forum, and whenever you have a new private message, it will tell you in the forum index, under private messages.
edit: good luck with the trojan, hope you can remove it!
there is an app called the cleaner, it scans for trojans, you can get it here:
http://www.moosoft.com/