Resonant Blue Hi.
Something you can try.
Start your computer and keep tapping F8 until the safe mode screen appears. Select "safe mode with networking". When it loads, download the free version of malwarebytes
Malwarebytes.org Install, update it and run a full scan while still in safe mode. If you still have this exe problem while in safe mode the only other suggestion I have is to reinstall vista again but reformat your c:\ drive first.
With .rar files you need a third party program to open them, like e.g "winrar". Windows cannot open .rar files.