Locate and Delete
Right Click and Rename it to wininet.old
Now Navigate to D:\WINNT\System32\DllCache
Right Click and Select Copy
Go back to D:\WINNT\System32
Place the pointer inside that folder,Normal Click once and then Right Click and Select Paste!
Restart Normal and Scan D:\WINNT\System32\wininet.dll again at both sites as instructed before!
Also,Get the PC Scanned at the Panda Site if possible!
Post back any reports along with a fresh HijackThis log!