BleepingComputer.com: Help With Adobe Photoshop Cs!

I bought my Adobe Photoshop CS CD off ebay a couple of years ago. I think it's an illegal one. =/
I recently had a lot of viruses, trojans, and malaware on my computer, but I'm pretty sure I got rid of it all. Now though, whenever I try to open adobe photoshop cs, I get error messages. I don't know what to do, because if I uninstall it, I don't know the activation code to reinstall it!!
I once read somewhere that after removing adobe photoshop and reinstalling it again, you won't need the activation code. But this also worries me because I don't know how to safely remove it without disturbing that. When I went to add or remove programs, adobe photoshop CS was no longer there. Why? How would I go about removing it even if I wanted to?

Error Messages:
"This application has failed to start because mr310ifc.dll was not found. Re-installing the application may fix this problem."

"Memory could not be allocated for the activation process. Please close all applications and try again."

have you just tried to reinstall the program from the disc?

Well I just discovered that I am having problems with the CD as well.
When I put it in, nothing came up.
So I just right clicked it in my computer and pressed "Install All." I got another error message.

Error
Error: System.ComponentModel.Win32Exception: The system cannot find the file specified
at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
at System.Diagnostics.Process.Start()
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
at S2PCISE.S2PCISE.ShellExt.IContextMenu.InvokeCommand(IntPtr pici)

This post has been edited by Maranda: 04 July 2008 - 11:55 PM