Adobe Photoshop CS3 end of 30 days

[ThinkPad560X]

I have the boxed copy I bought of Adobe Photoshop CS3 a long time ago. I installed it on my Windows 7 machine and never activated it on the W7 as it was on my XP machine before I replaced the HDD. When I type in the Key (located on back of installation DVD case) I get the green check mark for key typed correct. It attempts to try to activate and then it says no internet connection at top of screen. I try again and still nothing. I searched online and read that the activation severs have been taken down. I only use my software when I need to use it and see that Adobe moved to a pay subscription software service now. My CS3 30 days is up and I don't mind just uninstalling and reinstalling it to have the 30 days again. But when I uninstalled and reinstalled it, it still said 30 days is up. So it must have somewhere on my windows that Adobe CS3 was installed before. I uninstalled CS3 again and even went under the regedit files and deleted anything Adobe Photoshop and tried again and still got same page new install of CS3. I know how to reset the 30 day activation of Windows XP,Vista,7 and so on. So I'm sure there's a way on photoshop to rest its 30 day.

[RealBlackStuff]

How about deleting all Adobe cookies?
Plus anything in Users/[yourname]/Appdata/Local, LocalLow and Roaming.

[exTPfan]

When they took down the activation servers for Acrobat 8, they gave owners a way of re-installing it without activation (I forget the details). I'd check to see whether Adobe did something similar for Photoshop CS3.