First off, that’s hot. You should forward to me first for historical archiving purposes:
Second, you can search for “darik’s boot and nuke”. It’s a multipass eraser, instead of “deleting files” where they could be recovered, it writes all new “zero and one” data across the entire drive, in a sequence the computer registers as blank. It would take many PCs many years to break that code, but he’s free to start writing new data to it immediately.
Another way (that isn’t as in depth but is better than recycle bin) is CCleaner. Free software, perminently erases whatever data once it’s in the recycle bin. Install it with Use CCleaner in the context (right click) menu and use that instead of “empty recycle bin” to take care of junk data on the fly.
Historical archive purposes. You can .rar them and upload to megaupload.com and send me the link. Good memories must be preserved!