This one is free: Timestamp
It's open source (free software) but it seems the site wants log in to download any files
Anyway, its a legit safe site, and I used my old email and password I used a long time ago and it worked, so I must have been there before myself (obviously to download some free tool a long time ago)
Anyway I searched Google for a free Windows 7 TimeStamp changer, and after going through a few hits, this one seemed to be the best.
But I run XP and I have the free utility PropertiesPlus that does this too, except I'm pretty sure PropertiesPlus doesn't work on Windows 7 (well basically positive it doesn't)
So try the free Timestamp
, and please let me know
if Windows 7 is supported, it was last updated 15 July 2009, so you'd think so.