Batch File Asks User for Y or N

In my batch file, in the process of doing what it does, I want to have it ask the user if they want to delete all folders (under the current folder that is) that start with “bak”. So the command will delete all bak* folders if they hit Y, and if they hit N it will continue on with the rest of the script and not delete anything.
I have been searching for an hour but am tired tonight. Any ideas how I can do this? Thanks.
Oh, this batch is for 2000 and XP systems if that matters.
Thank you.