T-Mobile Sidekick phone and to Alltell Service Provider?

Okay first off... this is my first post, so I'm not even sure if I posted this in the right place. But anyways, I currently have Virgin Mobile as a service provider. I want to switch to Alltel because they seem to be the best company and they also seem to have a wide enough coverage area for me and what I need. But I don't really like the cell phones Alltel has to offer. I really like the Sidekick 3. But T-Mobile is NOT an option for me as a cell phone provider. Their plans seem to be overpriced and their coverage area isn't large enough for what I need. So I was wondering if I could buy a Sidekick 3 from T-Mobile and then take it to Alltel and get the cell phone plan I want and need??? If I could do that, I would be EXTREMLY happy! I'm also not sure if Alltel could give me payment plans/payment options for everything the Sidekick 3 has:

Messaging
Instant messaging: Yahoo!®, MSN®, and AOL®*
Text messaging*

Fun
1.3 Megapixel camera
Music player
Games
Expandable mini SD memory slot

Communication
Real web browsing
E-mail
Bluetooth® wireless technology
Built-in QWERTY Keypad

Information
Personal Information Mgr
Vcard support


Will someone PLEASE help?!?!

Sorry, T-Mobile uses GSM technology and Alltel is CDMA, the phones for these two different networks aren't compatible with each other. In fact, with Alltel and other CDMA providers, there is no SIM card and the phone has to be activated by Alltel using its electronic serial number (ESN), who will not under any circumstances activate a non-Alltel phone. The CDMA providers maintain a list of ESNs that are clear for activation and they won't activate a phone that wasn't sold for their network. Either way, the Sidekick is a T-Mobile exclusive and the data features will not work on other GSM networks, so all you'd have is a big, clunky phone with no text or internet capabilities.

HINT: There are a few smaller providers scattered around the country that sell HipTops which are basically a Sidekick with a different name... one of them, SunCom, told me over the phone they would *probably* be able to reprovision a sidekick to work on their network, since it's identical to the Sidekick (not a definite answer, they told me to bring it in to their store for a tech to look at). Check around, see if you can find a local provider with a HipTop!

But HipTops are old, and arn't has "Hi-tech" as we want them to any other suggestions that maybe are a bit newer and can relate to the Sidekick 3 a bit more?.. I had the very same question.. but I guess I know the answer now!.. haha, thanks