Do you mean photoshop 5.5 from around 1999 or photoshop cs5?
Sadly I mean Photoshop 5.5 from the ninties.
N R WRIGHT
In a message dated 08/11/2013 11:45:29 GMT Standard Time,
Re: Photoshop 5.5
created by RKelly_ (http://forums.adobe.com/people/R_Kelly) in
Photoshop General Discussion - View the full discussion
It may run but you'd probably need to run in compatibility mode:
All best are off. Your mileage may vary. Don't try this at home. Good luck.
Photoshop 5.5 should run on the 32 bit version of windows 7, provided you don't have a hard drive bigger than 1TB and/or you don't
have more than 1TB of free space on the hard drive.
I've used photoshop 5.5 on windows 7 without any compatibilty modes, though ImageReady may be a little glitchy.