i'm using the wxp sp2 that came with digit dvd. while using sp1(sp1a), i had installed the updates for worm/virus/whatever for things like blaster,mydoom, sasser and the likes. i'm talking about those relatively tiny files which start with KBxx.... with some strange numbers. i want to know if i still have to install them after installing sp2. besides will it work. won't such updates be included into sp2. i think they should. i ain't sure. i also read on the MS site that they are compiling their new stuff like updates on new compilers, which prevent the buffer underrun problems, which mess up windows. so after updating to newer service packs and then some files get corrupt, i can't be restoring those files back from the installation cd. right? so if i have to restore/update, will i find it in that dllcache folder or is it some where else. also while installing sp1/sp2 form a drive say d:, the contents get extracted to something like "d:\(some long string of numbers and characters)". can i delete this after installation or does it get deleted automatically or is this where i should keep the backup of the new files.