Muadib
Don't worry. It runs fine. Service Pack releases are mainly bug fixes for specific interactions between various HW and SW. There are always a couple of feature enhancements (ATA100, S/PDIF), but for the most part they won't affect the majority of users much.
Install it! Win2k is IMHO (and I don't see how anyone could dispute) the best OS MS has released since Win95. I love it, and I'll never switch back to that sh!tty Win9x kernel.
l2c