How to change Attributes of several files in a folder?

[VERYDUMMY]

when i was using xp i lend 1 hdd to a friend, but before i change the attribute of a folder and all th files in it(25000) with DOS i use a comand li this:

C:[user]> attrib +S +H [folder path] /s /d

[/s /d] is to change the files in the folder but it doesnt work for W7

i don't want to to change al the files one by one(25000!!!)

help!

 

[Offsprung]

Looks like it supports all the same options.
1. Do you "own" the files?
2. Did you try running cmd as admin?