First off, don't kill yourself, everything will be alright. 😃
I've talked about uploading multiple files at length in this thread, check it out: http://www.phpbuilder.com/board/showthread.php?s=&postid=10254665#post10254665. Here is another useful link: move_uploaded_file.
As far as actually loading it into a blob field, I'm not really sure how you would do that. I've never seen the advantage of loading binary into the db as opposed to just putting it in a dir. You're going to bog down your DB if you're loading and transferring a lot of binary to it.
Anyway, check out those links and post any more questions you have after reading through them.