I got a pointer from keith on the blackberry forums:
Thanks for the pointer Keith...
I did this, and it works
install jdk 1.4.2_08, install jdk 1.5
change
HKEY_LOCAL_MACHINE/Software/JavaSoft/Java Development Kit
change "CurrentVersion" from 1.5 to 1.4
not pretty, but it worked for me.
Cameron
http://www.ausprices.com.au/