I copied the brand new Version 1.3 of the JMEC64 emulator for J2ME cellphones
to a BlackBerry-compatible OTA download: BlackBerry Browser Download Link
It manages to successfully install on my BlackBerry, but I get an error message when I try to run on my BlackBerry. Can any of you OS 4.2 users, give the link a try?
If you are a programmer with enough spare time to toy with the source code, you may be interested to know that the source code to JMEC64 is available at the first link -- it could be rather easily ported to BlackBerry.
(Please do not email or PM me directly; reply to this post instead. My Inboxes are overflowing. Thanks!)
(NOTE: To uninstall after wireless downloading go to Options->Advanced->Applications)