Win xp is down, working through Recovery Console - plz help

One of the SP2 Updates made my cdrw and dvd disappear. I uninstalled SP2 and was removing updates one at a time to figure out which one was giving me the problem, the system went into a restart and all it does is reboot. I downloaded Win XP Home Edition Utility from Microsoft to boot up and I am in the recovery console, however, I am stuck there. Microsoft has not been able to get me unto my desktop. The only drive I have available is the A: - I tried uninstalling the updates thru console with the BATCH command, however, it tells me the command is not recognized.
I do not have WIN xp cd's because all I received is the recovery disc.
Prior to this I had purchased a dvd combo from Benq. I installed it in place of the cdrw, when I start the computer, it recognized it, however, I am not able to use it. (just thought it might work). Can someone please help me with this. Thanks!