SOLUTION: Starting Photoshop without problems

PROBLEM: Photoshop CS3 midway loading will give you “could not initialize Photoshop because the file is locked. Use the properties command in the windows explorer to unlock the file," and then it does not start (!)
SOLUTION: You might as well forget about trying to follow the above instructions. Browsing the web I found the quickest solution: press CRTL+ALT+SHIFT while double-clicking (or clicking on the quick launch) Photoshop icon. Bingo! This shortcut will fix the problem. It will basically replace (only if you decide to do so) the .PSP preferences file named Adobe Photoshop CS3 Prefs.psp located in the folder C:\Users\UserName\AppData\Roaming\Adobe\Adobe Photoshop CS3\Adobe Photoshop CS3 Settings. Search in C:\ or in the drive or partition where you have Vista installed.