vista features that you can disable
 

here are some vista features that you can disable according to pc world, " useless interface options, pointless online tools, and little-used communications extras are slowing down your pc "

1. sidebar
2. aero
3. assorted interface beautification option
4. remote assistance
5.internet printing client
6. windows meeting space
7. windows ultimate extras
8.readyboost
9.search indexing ( this one has a trade off ) diactivating vista's indexing will slow searches to a crawl not just seconds, but minutes
10. offline files
11.windows error reporting service

hope these helps