The box says;
Setup cannot copy the file lpdsvc.dll.

Ensure that the location specified below is correct, or change it and insert 'Windows XP System Files' in the drive you specify.

Copy files from:
c:\windows\system32\dllcache



The file it is attempting to copy is in the dllcache. So what should I do?

I recommend a quick purge and clean. Purge your system of clutter using Windows [XP / Vista] Disk Cleanup, ATF Cleaner or CCleaner. If you use CCleaner, then during installation, uncheck the option to install the Yahoo toolbar and before first use, go to Options > Settings > Advanced and ensure Only delete files in Windows Temp folders older than 48 hours is unchecked.

Note: Ensure you know your site credentials (user names and passwords) for sites you frequent before cleaning; you may have to login again at next visit.

Then download, install, update, and run Malwarebytes's Anti-Malware (MBAM) to ensure your system is free of malware. Then do the same for all other computers on your network (everything on your side of the Internet gateway, typically a cable/DSL modem).

Then see how it goes and let us know.

Thanks - worked a treat.

Great and thanks for the followup.