cannot open disk drive by double click it?

[=?Utf-8?B?YXJyZW4=?=]

why i cannot open disk drive like local disk C: or D: by double click it? i
need to right click it ,then there are auto, search, open,explore... ,click
open to open it?
i have already reinstall my windows xp now ,but cannot sort it out...please
help me, many thanks...