And some advice if you decide to obtain advice from HP/Compaq support @ their website: http://ipgweb.cce.hp.com/psgna/caller/chat.asp
The good news is that you will get prompt (and free) advice from a supposedly Compaq-familiar human and perhaps links to appropriate help topics. The bad news (in my recent experience doing a System Restore on a six year-old machine) is that they seem too willing to take you into the bowels of your operating system/BIOS to tinker around, but failing to mention that along the way you may be presented with screens asking you to make choices or take actions that you may not understand....at a time when you are not able to communicate with their site. You then are faced with the option of calling their 1-800 help line and if your unit is not under warranty, paying $40.00 (up-front via credit card) for the privelege of trying to explain your problem to someone who's English is less than understandable. I BS'd my way out of the $40 charge, but after 20 minutes of frustrating discussion, I determined that the fellow I was talking to knew less than I did about System Restore.
My bottom-line: Glean info from Compaq, Google the heck out of your problem, pester any techies you know, but finally put it on the boards here in front of people you can trust before jumping into something. Good luck. And oh, by the way, I wrote the word "Dell" on a little Post-it note and stuck it over the Compaq logo on my tower...and I think it's helping