[PurposelessPlay]

SP2 is Service Pack 2. Microsoft has made XP more secure and it includes a more robust firewall than the original XP. You might already have it if you use the automatic update feature of XP. I'm sure it can be found at microsoft's site. Alot of people will tell you that it messes with alot of your programs but I have had no problems with it. But I'm not much of a power user at home so who knows.

Hope this helps!