SQL server on Small business server 2003 installing Microsoft CRM 3.0

Hi there

Im trying to install Microsoft CRM 3.0 on a small business server 2003, but have a problem with sql server, we are using it a trail in our own office, and have a copy of the microsoft action pack subscription, i managed to install SBS2003, and on that disk (and in the action pack) is a copy of sql server 2005.. but i can’t manage to get it installed for the use of CRM 3.0

Any help will be appreciated.