Rakeback with Eurobet

[GimmeDaWatch]

Im having some trouble getting my Eurobet account set up in order to get a rakeback. According to rakeback.com, I need to install it from a "clean" computer with no Party Skins previously installed. I tried to use my roommate's computer, and after several attempts it gave me the "choose user id" prompt, but then I couldnt sign in. After trying a few more times, I got an error screen that said my firewall might be the source of my problems. I have XP on my computer, so its easy to turn the firewall on and off at will, but hes running Win 2000, and I dont know how to do it on his. I then searched the web and found a 2+2 thread about cleaning the reg key off my computer, "UCID" under calculator in regedit, but that no longer seems to work. Any advice? Also, even if I were to ultimately get the account set up on my roommate's computer, would I be able to play two skins at the same time on my computer?