Backup Batch File

Schedule weekly to hold 5 weeks of history of important folders >

rd /s/q u:\backup\5

ren u:\backup\4 5
ren u:\backup\3 4
ren u:\backup\2 3
ren u:\backup\1 2
md u:\backup\1
xcopy c:\my documents\*.* u:\backup\1\*.* /r/v/y/s