DHCP howto

What would need to be done in dhcp setup in order to have radusergroup/radcheck/radreply/radacct-alike behavior? I am trying to make it work with cable equipment (CM,MTA,CPE) but i am not sure how to start. CM and MTA would have static IP addresses (sql prefered because of additional replies: boot-file,dns,gateway etc.) and CPE's would have dynamic IP address assigned. I am willing to do some serious tests and get back with results because if everything works ok i would switch to freeradius from standard ISC dhcpd. Thank you