I think it is well worth it but if you do have trouble you can uninstall it through uninstall software and penholder is right lots of mags have it as a free bee or if you have broad band you can get it through windows update.
I installed it from the CD "without probs", but found over the next few weeks that some weird things happened. In particular, my computer would occasionally freeze part way through the boot sequence. I put this down to a slight incompatibility with one of my progs. Some other minor but irritating things also occurred, so I decided to revert back to XP without SP2,using the uninstall option. This worked surprisingly well, and I am now back to my reliable XP system. If you use a reliable firewall (like Zonealarm) and an anti-virus (like AVG), there is no real need to use SP2.
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