Here's the PalmOne Tungsten T3 Handheld:
http://www.amazon.com/gp/product/B0000DBJJT/ref=olp_product_details?ie=UTF8&me=&seller=

Here's the PalmOne Tungsten E2:
http://www.amazon.com/gp/product/B0007VMROE/ref=olp_product_details?ie=UTF8&me=&seller=

And here's the keyboard:
http://www.amazon.com/gp/product/B00007E8XE/ref=olp_product_details?ie=UTF8&me=&seller=

Will either or both of them be compatible to the keyboard?

Also, as an added question, which PalmOne do you think is better? I mainly want to use it as a writing utensil.