Thanks so much for your reply - very very helpful!! :)
To answer your question, i am an independent recruiter, registered with the information commission so want to make sure that all records i held for candidates etc are wiped completely.
I use a hosted recruitment solution so removing this from the working pc hopefully means that nobody can access my live data from my old pcs (the actual files are stored by my supplier) but CVs/candidate ID info etc was originally emailed to me in outlook for uploading to the system so i guess the info would still be on the pc somewhere. I removed MS office on the working one then deleted all docs, temp files, the pre-fetch file (someone said that would be a good idea although I'm not sure why) emptied recyclign bin etc etc but to be sure i really want to wipe the operating system and everything.
I have ordered some software from ebay which 'apparently' meets US and UK gov standards but was rather cheap so I am a bit sceptical but we shall see. I might use one of the free options you mention above first and then the disc from ebay afterwards to be sure? or will the first option make it impossible to even run the 2nd software?! eek so many techie questions...lol
Re the broken one I will take apart the hard drive and smash everythig I find with a hammer :) after the morning I have had that could be fun.......