Should be ok just dont delete the worng one lol,Just out of interest why did you reinstall and change the folder name? windows should overwrite all the files in the c/windows folder when you reinstall it.
i'd thought of hiding the folders in the bin but there is a limit to the size of folders you can place in there.
the renaming was a rare flash of genius on my part. i was having HUGE problems reinstallnig Windows so i decided to change the file name and it worked ! don't ask me why because i havent the foggiest...
WHY NOT DELETE JUST ONE FOLDER AS SUGGESTED ABOVE THEN IF ALL OK DELETE THE OTHER. IF THE FOLDER IS TOO BIG FOR THE BIN THEN OPEN IT UP AND TRANSFER ALL THE FILES INTO THE BIN THEN DELETE THE EMPTY FOLDER. MAKE SURE YOU ELECT TO SHOW HIDDEN FILES.