my hard drive crashed and i was wondering if there'd be any way to make it a slave drive
That depends on how it crashed. If it suddenly became non-responsive then its likely the electronics have failed and the drive is history. If you were able to boot but you got errors or intermittent problems then you may have a chance of extracting data from the drive.
The first step is to get it recognised in the BIOS. If you can't get that to happen then the drive is useless. Jumper settings and cable combinations are difficult to describe, so the simplest way to add your old drive to the system, without changing jumpers, is to connect it to the 2nd IDE channel. The motherboard will (normally) have two IDE connectors. Usually one is connected by a ribbon cable to the hard drive and the other by a second ribbon cable to the CDROM drive. If that is the case just unplug the CDROM drive and plug in your old hard drive in its place - it should then be detected in the BIOS (change the settings to AUTO if necessary).
If both hard drive and CDROM drive are on the same cable then you will need a second IDE cable to connect your old hard drive to the 2nd IDE connector.
If you can't get the drive connected because you don't have access to another IDE cable then you wil have to change the jumper settings. You need the jumper settings for both
hard drives and you need to identify your IDE cable as 40 wire or 80 wire (Normally the 80 wire has different coloured connectors). If you have a 40 wire connector you must use the Master/Slave settings. If you have an 80 wire cable you can use either Cable Select settings on both
drives, or the Master/Slave settings.
Logical drive letters:
The first recognisable partition on the first hard drive in the case is referred to by Windows as "C:" (or Local Drive C) because the letters A: and B: are reserved for floppy drives. If there is a second partition, on the same hard drive
that will be referred to as "D:" (local Drive D) and so on. When all the partitions on all
the hard drives have been allocated a drive letter Windows will then allocate letters for other IDE devices such as CDROM drives.
In the most simple setup there is only one partition on your hard drive, which is therefore C:, and one CDROM drive, which is therefore D:.