is it possible to change product keycodes without reinstalling my entire operating system????

i have a windows xp pro cd that i reinstalled recently. i have two different keycodes, both seemed to work fine for activation. problem is automatic updates this time around was activated, and it installed service pack 2 as an upgrade. now security says my version of windows is not genuine. when i try restoring with system restore it wont go back past the installation, when i try to uninstall it says i will lose all of my files on my computer. my question is, is there a way, without reinstalling windows and losing all my data, that i could some how change the keycode that i entered and replace it with the other one i have ?????? possibly through the registry, if so where is it???

Do i need to backup before updating my computer to sp1?

My computer automatic updates ask me to install vista sp1? So do i need to backup my data first?

What’s the best computer security suite?

I don’t care about price. But I am looking for a computer security suite with these features:

~Anti-Virus
~Anti-Malware
~Anti-Spyware
~Anti-Adware
~Anti-Phishing
~Anti-Spam
~Ad Blocker
~Protective, yet "hands-off" firewall
~Computer scanning
~Frequent (automatic) updates
~Advanced customization
~Any other features to keep my computer safe
~Use little computer resources

I heard from various sources that…

ESET Smart Security Home Edition V3.0
Kaspersky Internet Security 2009
Symantec Norton 360 2.0

are the best programs. But which one is the best? I only want one, all-encompassing security program to run on my computer. Any help would be greatly apprehensive.
Wow … I specifically state suite in the question and details and the first answer avoids it like a car accident. So hard to find a good, unbiased answer now days…
Ahh man, ZoneAlarm looks good too .. now I’m really confused. :(

About computer security.?

Most of the PC users and computer technicians suggest that keep disable the FIRE WALL,AUTOMATIC UPDATES and VIRUS PROTECTION in the windows security centre of the computer. Why should not enable the windows security centre (firewall,automatic updates and virus protection). What happend if enabled.Is these protect the computer totally. I like to enable them because I am not interested in using other antivirus softwares.Give me your suggestions. Thanking you.

Thinking about fixing computers for money…?

I need a way to make some extra money & I figure I could do so by speeding up people’s slow computers & making sure they have decent security.

I’ve come up with a list of things that I could do, but I’m looking for more suggestions.

Here’s my list:

Optimization:
? Disable unnecessary startup apps & services
? Disable unnecessary visual effects
? Disable windows sounds
? Optimize TCP/IP settings
? Optimize paging file
? Optimize Prefetcher
? Reduce Recycle Bin & Sys Restore space usage
? Uninstall unnecessary/redundant apps
? Disable indexing
? Defrag hard drive
? Remove invalid registry entries and defrag it
? Scan hard drive for errors
? Remove junk data
? Scan for spyware

Security:
? Download latest software/hardware updates/drivers/etc.
? Configure automatic updates
? Configure firewall
? Install antivirus & antispyware
? Disable Windows Messenger
? Enable DEP

I think that covers it, but is there anything else I could include?

Also, how much should I charge?

Thanks.
I’d also like to add that I’m not too comfortable with the idea of working from the client’s home (for multiple reasons), so I plan on advertising that I’ll pick up their PC, do my work from the comfort of my own home, then have return the PC in 24 hrs (or same day, if possible).

My question is, how can I ensure my trust that they’ll get their computer back and that I’m not trying to scam them (it probably doesn’t help that I’m only nineteen)?

I figure I can play this to an advantage by advertising that they won’t have to worry about being stuck at home for 1-3 hours because I do the work at my place, thus letting them have the freedom of going to work or wherever they might have to go. How does that sound?

After I connect via dialup and before I open my browser, my PC starts receiving data. Why is this?

I tried shutting down all services and processes that let me stop them, and still something was being downloaded to my PC (I disabled Automatic Updates)

My PC info.
A recently purchased Dell Vostro 1500 with XP loaded. I use McAfee virus protection and Iolo System Mechanic 7, which do have periodic updates, but they allow me to initiate downloads before the downloads occur.