If you are running XP Professional SP3, you can install the latest version of Adobe Reader (9.3) from http://get.adobe.com/reader/?promoid=BUIGO, as Reader 7 is no more supported by Adobe.
If you have any existing installation of Reader on your machine, uninstall it before you install the latest one.
Actually, Adobe Reader 8.2 runs quite nicely on my older computers with XP-SP3, and even on W2K-SP4 machines. I personally don't recommend Reader 9.x for older systems.
Thanks for your answers,
vbhv_malik i've installed adobe reader 9 but the problem continues, i can't open pdf files. And now the program needs more time to open in the administrator account.
ʇɐb ɹəuəllıʍ, reader 8 i heard is even heavier than 7 and 9, i can't installed!
Any other solution, anyone knows which registry keys is necessary to modify? I'm sure is a permission problem if i change the type of account from limited to admin i can run adobe reader 7.
You are certainly right - it is a permission problem of some kind; but where exactly?
I have googled the problem and found several topics in various forums. Several pointed to MSVCRnn.dll - either MSVCR71.dll or MSVCR80.dll - can you make sure that the limited user has access to this DLL, at least Read and Execute?