u mean u lost all your custy details, unless u have emailed them to yourself then no you cant
I've been using an external hard drive to back up my spread sheet, about once per month, and I always print off a hard copy too. But the thing is, my external hard drive is noisy, so it's not normally plugged in, and sometimes I forget.
But this morning I e-mailed my spreadsheet to myself and it worked lovely; and it's a big document.
Thanks, BM, that was a simple but effective tip; in fact I don't know why I didn't think of it myself!

Ronnie, I hope you get it sorted out.