nganvu--Seems to be a Realtek Audio file
http://www.reger24.de/prozesse/ALCFDRTM.EXE.php
BTW, as a general rule it is not a good idea to run CWShredder unless you know you have a problem it can solve, specifically CoolWebSearch spyware.
And there is now a new version of CWShredder. I have not used it. It seems to be endorsed by Merijn, the writer of the original CWShredder, but just how much more it does than his last version I do not know.
http://www.intermute.com/spysubtract..._download.html
You do not have to also download SpySubtract to use it.