Thanks for the feedback! -I'll fix those typos soon...
You would have to generate a separate variable for each add type, then just call those variables on the templates where you want them displayed, so you wold want to make an adsense1.tmpl, adsense2.tmpl, etc. that generate an $adsense1 and $adsense2 variable. Then place the variables on the pages where you want the ad displayed.
Since Adsense "reads" the page to serve up ads that are relevant to your content you don't want to put ads on every page of your site -unless you like serving community service ads