Hi!
Log on as Administrator or as a member of the
Administrators group.
Click Start, click Control Panel, and then click
Performance and Maintenance.
Click Administrative Tools, double-click Computer
Management, and then in the left pane, click Disk
Management.
Right-click the drive, partition, logical drive, or
volume for which you want to assign a drive letter, and
then click Change Drive Letter and Paths.
Click Change.
Click Assign the following drive letter (if it is not
already selected), click the drive letter that you want
to use, and then click OK.
Click Yes when you are prompted to confirm the drive
letter change.
[You cannot change the drive letter of the system volume
or boot volume].
See:-
http://support.microsoft.com/default.aspx?
scid=
http://support.microsoft.com:80/support/kb/articles/q
307/8/44.asp&NoWebContent=1
http://support.microsoft.com/default.aspx?scid=%
2Fdirectory%2Fworldwide%2Fen-gb%2Fdefault.aspx%3Fscid%
3Dkb%3Ben-gb%3B307844%26amp%3Bln%3Den-gb
regards/
ssg/pronetworks.org