Luckily, fate and ATT answered this for me. Turns out that the iphone sim works in my tilt and the the iphone sim is cheaper per month than the tilt plan so I can switch back and forth and pay less.
So then I just needed to find an iphone. I bid on one on ebay that was reasonably price and lost in the last few seconds. Then I remembered a friend of mine had one and hated it and she loved my new nokia 7900. They cost about the same. So I IMed her and we scheduled a trade for tomorrow. I, however, am having a little bit of pre-partum depression as the nokia 7900 was the cutest, smallest, fastest 3G, tethering dream phone I ever had ;( At least my friend can tether now too.

On a side note this is the second night I worked on work from work till midnight. I think I might be a loser?
wait, what iphone 2 in june? I've heard rumors about a 3G iphone, but not that soon... but they are releasing the app store in june, and iphone software v2... is that what you mean? (or do you know something I don't know?)
Anyway, you totally need an iphone, and you need the SDK (downloadable NOW!) so you can write awesome iphone programs.
Yes. do it.
(and I thought i would use my iphone sim in my treo, but haven't done it once. but i like knowing I could.)
If you don't want to risk anything you probably should be getting one of these:
:::link:::
Paul, I would be careful if I were you. I knew this guy who switched phones on a regular basis and then he got chlamydia.
Play safe.
So does that make him a phone swinger?
You know your a phone whore when:
1) You meet someone for a phone swap
2) see #1
However, seeing that you know the person then I might let you slide on this one.
I wouldn't say your inner phone self is a whore per se - just the "love 'em and leave 'em" type.
well if that makes you a loser than i am one too, every week.