Hi. First thing to check is the jumper setting on the rear of the DVDRW. There should be 3 pairs of pins, marked Master, slave, cable select (or M/S/CS etc).
If the drive is going to share the IDE cable with another device (usually a CDROM), one drive must be set to Master & the other to slave OR both to CS. Master drive should be at the end of the cable, slave in the middle.
If DVDRW is not sharing a ribbon cable, then just set it to Master (or CS) and connect it to the end of the cable.
Once connected, the system should recognise the drive in the BIOS & in windows even without the driver. It should also function as a normal CDROM drive. The driver is normally only necessary for burning discs.
As for installing the driver, there should be instructions on the driver disc when you receive it, telling you how to go about it.
If not, let us know, & tell us what is on the disc (i.e Writing software or driver update etc)