Thanks -- I sort of skimmed over that section, wasn't looking too closely. I think I'll have to write a guide to geocaching as I pick up on it, though; it's a very involved sort of thing to do.
[edit] Oh, thanks doubly to Pneumatic! You're a great help!
Now, I must figure out how I will procure a GPS with a limited budget... eBay, yes, that's it...