Are you getting this error with RPCRT4.DLL. If you do you need to replace this file from the Xp disk.
If you cannot follow, send me a message at firstname.lastname@example.org
and hope we can talk over gmail or skype and i'll guide you through.
It may be difficult for you to do it.But if you could do, here the steps are :--
1.Use the Windows XP Recovery Console to replace the RPCRT4.dll file with the original version. To do this, follow these steps:
Insert your Windows XP CD-ROM into the computer's CD-ROM drive or DVD-ROM drive, and then restart your computer from the CD-ROM.
Some computers may require that you modify the basic input/output system (BIOS) settings before you can start the computer from a CD-ROM. For information about how to modify BIOS, see your computer documentation.
At the Welcome to Setup screen, press R to start the Recovery Console.
Press the number key that corresponds to the installation that you want to repair, and then press ENTER.
Type the Administrator password, and then press ENTER.
With the Windows XP CD-ROM still in the CD-ROM drive or DVD-ROM drive, type the following commands, pressing ENTER after each command:
ren RPCRT4.dll RPCRT4.old
expand RPCRT4.dl_ BootDriveLetter:\windows\system32
It'll fix your problem. :-)