Thanks to mbarvian at xda's..
http://forum.xda-developers.com/showthread.php?t=485349
Update..2/23/09
new ones have arrived!
should work on all phones, new mirrors, will not remove your normal Calculator if you decide to remove it.
Also, new download location: internal storage (for devices like Diamond with 4GB internal storage).
Also, broke it up into language packs, so if you don't speak great English, just download the language of your choice. If your language isn't up, look at the notes section for what to do
enjoy! report any bugs you may encounter

(still have to fix the decimal issue)
__________________
From xda's...
new versions up!
made storage card versions (all images go to storage card), and fixed excessive right margin on QVGA landscape (check screenshots!)
still to come: all device, and fix that stupid decimal
enjoy!
Hope it Helps.
Thanks T M Z
Hey all,
I'm sure all of you have seen the new Diamond2 and Touch Pro2 devices. Well, thanks to this post:
http://forum.xda-developers.com/showthread.php?t=484599
I was able to grab the beautiful calculator .cab, and port if over to all screen resolutions! (QVGA, VGA, WQVGA, QVGA!)
Just download the .cab that fits your screen and enjoy!
Screenshots
Portrait:
Landscape: