Not starting up - Chime, 5 beeps, a short chime and another beep

Uggh! Okay,this is the latest in a series of replacements/repairs to my Macbook since July of '09 - and still can not get it going. 1st the harddrive died - bought new one and had to replace the bottom case so the new harddrive would seat correctly (cracks in case,) the case replacement came and apparently there are 2 diffent models on the macbook 13" that go by the same model number but are not identical - replaced the back case again once the difference was dicovered during reassembly. As I was installing the new system (via CD system disks) the optical drive died. Replaced with a Superdrive. When reassembling it again I snapped the keybourd cable that attaches it to the logic brd. Woohoo, lucky aint I! Got a new keybrd - reassembled. Started up once after many tries and gave me a Kernel Message telling me to restart my computer (in multiple languages.) Now when I try to startup it sounds as though the optical drive is trying to eject a disk or is looking for one (none in the drive) while making the long startup chime followed by 5 beeps then a short chime then another beep and thats it -- nothing but illuminated grey on the screen. Help anyone! The chime/beep combination must indicate some code for the current issue.