It's under the Site Authentication portion of the Adsense management area. Click first on the Adsense Setup tab, then look for the Site Authentication tab.

Giz, when you're putting the link one in, where exactly are you putting it? Under the Header html include on the general options or how?

From my own site, my header includes all seem to be above the breadcrumbs and menu lines for the forums, but I note that yours are just below.

Did you put that into your header.tpl file?

Hmm...must've...I think I've reproduced it, by including the ad code into the header.tpl file at the bottom. So, if you did it by some other means, I'd be curious, but otherwise I guess I've got it cranking fully now.

I'm surprised how quickly the money accumulates, and after years of surviving by donations, I'm almost giddy

Yup, I shoved that bad boy into header.tpl at the bottom ...

I wish it accumulated fast for me; we survive by donations, but the occasional "minimum" met does help with some costs...

We generally try to survive with the occasional web dev job (hey, people like me! lol)

Well, to be fair, I'm stoked that in the 6 days it's been running, I've made just under 30 dollars. If that holds up, it will cover a lot for me on an annual basis. And, I pretty much followed your formula of left side box, footer, post and link in the header.tpl, with a search box thrown in for good measure.

I still can't seem to get that login thing working, so I ended up making our tech advice forum which had been protected by access levels at least readable by the public so that it would help influence ad choice.

Lol, well, if you're ever in the market for a techie, keep me in mind hehe...