if you are still using XP,buy newer one SSDNow V+100 SVP1002 instead.

The two links below will help you understand #1's comment:
http://www.tomshardware.co.uk/ssdnow-v-100-garbage-collection-trim,news-34497.html and http://www.anandtech.com/show/4010/kingston-ssdnow-v-plus-100-review

The two links above will help you understand #1's comment.

The two links two posts above will help you understand #1's comment.

I agree, follow #5 to #4, who endorses following #3 to #2, who tried to give you some extra information by providing some links rather than explaining that Windows XP doesn't have the TRIM command for garbage collection. However, the new controller on the V+ automatically takes care of that, allowing SSD's to have garbage collection on operating systems like XP and OS X, even without the TRIM command.

Seems like an very good price for 128g ssd.

For once number 5 through 1 make sense.