PC and Mac Development Environment

I just took a new position where the first task is to decide upon a 
development environment for the PCs and Macs.  I am hoping that 
some people out there can offer me some good suggestions. The two 
that I have found so far for consideration are JAVA and Notes/Domino.
Both of these support cross platform development.  Are there any 
others out there???

Our current make-up:
     Novell network with multiple network servers
     2 AS/400s (1 production / 1 development)
     PCs 
     Macs  (used for catalog production/will not go away)
     Only major DB is DB2/400 on the AS/400
     Current apps being done in Filemaker Pro, VARPG, & RPG IV

Thoughts:
     Hopefully support for both the PCs and Macs, but 
         mostly concerned with PC
     Open to any language
     New server is not out of question (NT/Novell)
     2nd Database is not out of question (oracle/DB2/sybase)
     Re-use of AS/400 on the backend would be great

--  THANKS
------------------------------------------------------
Scott P. Johnson
Microcomputer Development Specialist
IBM Certified Specialist - AS/400 RPG Programmer
Highsmith Inc.
W5527 Hwy 106, PO BOX 800
Fort Atkinson, WI 53538-0800
TEL:  920-563-9571                FAX:  920-563-7395
sjohnson@highsmith.com
www.highsmith.com
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