Hi!
Great work! Perhaps you would consider adding the following to your iso...
1) Egroupware (egroupware.org) - a successor(?) to phpgroupware that loads in an ibay.
2) OSCommerce MS2 - a stable version that many of their contributions have been developed against. Not a CVS version...
3) Forgive me, I can't remember the name of the contrib right now [a long day... :) ], but it allows the admin to setup email addresses for different virtual domains using the same username (ie - sales@comp1.com and sales@comp2.com are different accounts). Perhaps it was a dugong contrib gpl?
Thanks.