Download the patch described in the Microsoft article, "MS03-039: A Buffer Overrun in RPCSS Could Allow an Attacker to Run Malicious Programs (Q824146)" (a 1,508Kb file) for the applicable version of WinXP used and keep it on hand and install before ever accessing the Internet. Should you format and reinstall XP at a later date, then install the patch.
I have a Pavilion A305W-B, it is only 4mo. old and it works fine. However I want to keep it that way. I run Windows XP,Celeron Processor 2.7GHz, 256 Ram,40 GB HD,56K modem,NTFS file System, IE&OE and LAN Connection. I have Yahoo Companion popup killer, ZA 4.5.594, Norton 2003 version 9.05.15, Ad-Aware 6.0, AVG 6.0.670, We use it mostly for e-mail, sending pictures, and looking up web sites for info. Don't play the games or music, occasionally listen to sports radio. Can you think of any other security programs I may need to add? (user friendly) I also do on line banking, pay bills etc. One other thing, What is normal for lan connection? I am getting from 41.2 to 46.6 Kbps.