there are 2 methods I can think of for deleting the folders:
1.
Boot to safe mode (Hold F8 during boot & select Safe Mode) so that minimum drivers/progs are run on bootup
Delete the folders using win explorer (cascading backwards if neccessary)
2.
Boot to DOS (hold F8 during boot & select DOS prompt)
if the folders are named as follows C: \windows\reallylongfoldername\evenlongerfoldername then type the following
cd\windows
cd\really~1 (this is the DOS name for folders using the 8-3
(filename system e.g. filename.ext)
cd\evenlo~1
del *.* (deletes everything from last folder)
cd..
rd\evenlo~1 (deletes the last folder)
del *.* (deletes everything from remaining folder)
cd..
rd\really~1 (deletes the remaining folder)
I hope this works, I'm at work at the moment and am typing this from memory!
************* OOPS! - You solved it while I was typing ***************