That is exactly what I'm trying to do. CCleaner's hard drive cleanup is very easy to use, reliable, and the best free tool I've found for that purpose. Running this before your virus scans can save a lot of time. I get system after system that are riddled with viruses and malware. My typical process is to use BartPE, manually clean temporary files or use ezpc fix which works "ok", update all virus definitions, and then scan using the tools available in BartPE. CCleaner is just a much better tool for my needs, especially since I can designate custom folders and save settings into an ini file. If CCleaner could have an ini setting or a command line switch to designate a drive letter it would be awsome. I know some folks might think I'm just being picky about something that is free and already works great, but I do think that many CCleaner users would find this feature usefull. Any help is appreciated.