Just downgraded from a working Pentium 4 3Ghz 2.5 Gig RAM machine (5 years old or close to it) to a quad-core 3-Ghz (each core) 8 Gig RAM machine and installed Windows 7 RC. Photoshop CS3 installed just fine. Trouble is, when I start it up I get an error message and Windows shuts it down cold. Typically, Adobe forums won't let me ask a question over there. I guess they don't want to be bothered by actual customers. They (adobe) PROMISE that CS3 should work OK with Win7. Do any of you here at the Cafe have words of wisdom for me as to any fixes? Many have been able to run CS3, no?