Help with this batch script?

Try writing this at a DOS prompt and see if it gives you any ideas about how you can format your directory name:

echo %date:~10,4%%date:~4,2%%date:~7,2%

When I run that it gives me:
20110924 (for today)

and a simple
echo %date%
returns
Sat 09/24/2011

If your normal “Echo %date%” gives you a date that is formatted in another way (say, without the Day shown, or with the YYYY, MM, or DD values in a different arrangement, then of course you’ll need to modify the parsing of the Echo command.

I know you can do it.

I figured it out, using a timestamp variable that works well, now i just need to really see if 90000 milisecondswill make it back up every 15 minutes xD

Leave the slashes, forward or backward, out of the name. Because those are used for delineating directories in just about every filesystem they will just be trouble.
Use maybe self-organizing dates in the YYYYMMDD format.