Replacing a cd rom drive

put a little jumper lieka blue or green or white cap on soem pins on rear on CS and slide it in. bolt down. put ide cable red or blue edge closest to power socket. carefull with pins pushing it in should look even if looked at from lower angle against cdrom
heres the dell steps manual http://support.dell.com/support/edocs/systems/dim2350/replace.htm#1101572