The f45f1_p.dll file is a piece of DVDXCopy created by 321 Studios. DVDXCopy allowed users to copy commercial DVDs, breaking the encryption, and as a result was banned from sale in 2003. The makers of this software, 321 Studios, went out of business in 2004 due to the ban.
Pirate copies of this software still are available online, but some of them have been altered to include spyware or viruses. If you find this file on your system, you should run your antivirus program and do a check for spyware.
ZookaWare offers a free spyware check with SpyZooka. If you are certain the copy of this program on your computer is legitimate and need to fix an error with this file, clean your registry with ZookaWare PC Cleaner.
Files installed on your system are tracked by the registry. Each file has an entry that tells Windows where to find the file and how to use it with the programs it belongs to. Errors in the registry entries break your programs. ZookaWare PC Cleaner cleans up reigstry errors. ZookaWare PC Cleaner finds and fixes every mistake in the registry to get your system running stable and smooth again.