Are you recieving any specific error messages when you try to modify the information? What exactly happens when you try to change the information on iTunes? I'm not a huge user of iTunes, but it seems like more information may be needed to help resolve this problem.
Thank you!
My Computer
Computer Manufacturer/Model Number
Lenovo ThinkPad T61 / Dell XPS 400
OS
Windows 7 7600 (x86 & x64)
CPU
Intel Core 2 Duo T7300 @ 2.1Ghz / Pentium D 820 @ 2.8Ghz
No, there is no any specific error. When I want to change the info, it won't work and cannot edit anything on the information since I can't even click on it.