How can i restore my bb 7290. So it can be like if i jus pulled it right out of the box?

If you haven't installed any 3rd party applications, you can just perform a Security Wipe (Settings -> Options -> Security -> General Settings, click wheel and click Security Wipe).

Or you can follow these instructions to completely remove the OS and install new: How do I wipe the BlackBerry using Jl Cmder? - BlackBerryFAQ

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If you have an unlocked 7280 which is for cingular and use a tmobile sim card is it possible to get the bb internet browser if you have the data plan. Tmobile said it can't be done. Anyway around it?

Sure, it should be. Yes.

Wirelessly posted (7130e: BlackBerry7280/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

I spent 4 hours on the phone with bb support and rim trying to send me the browser service books with no luck. Only icon I can seem to get is tzones and my email works fine.