This is a uk based forum, there a very few foreign members on here.
Your best bet if you'd like to buy new is Tartybikes as they have the most choice and do post worldwide.
To be honest you'll put yourself off riding going back to that frame, if you want something cheap go for a base ta26 or something. Can probably get one for less than £50 and they ride really good.
Obtain a copy of a 3.1.2 firmware
Go into itunes and plug in your ipod
Open the ipod tab
SHIFT-Click the Restore
Find the 3.1.2 FW
Open it and let it do its thing.
Here
What firmaware have you got? If you have 3.1.3 you wont be able to jailbreak. If you have 3.1.2 just download blackrain and install. You can't go wrong