Open recovery partition?

i cant open the D:/ when i open it, a warning is written
"Recovery Partition
Warning!

This area of your hard drive
(or partition) contains files used
for your PC Recovery.

Do not delete or alter these files.

Any change to this partition could
prevent any recovery later."
how can i open it??please ans breifly tnx..hope u read dis soon..il w8t tnx