The IEengine.exe is not a Windows file. I would recommend deleting it and
the Blackbox.class file as well.
I cannot find any info on the Pcexp file? It may be a spyware type
application. I would recommend going to the following website:
Click Register to join the forums (free) and then go to the
"Parasites - Adware, Spyware & Other Scumware" forum and post a detailed
explanation of your problem
for expert advice and guidance on how to clean your system.
If anyone knows what this file is, it will be the experts there.