Can't ANYONE help me with this????

I have a problem with my CD-RW not being able to burn CD's
and my DVD not opening and when it does, sometimes it will
read the CD, sometimes not. I've found the 'error report'
on both but don't know what they mean or how to fix them.

The errors are:

1)The driver detected a controller error on \Device\CdRom1

and

2)The device, \Device\CdRom0, has a bad block.

Can ANYONE PLEASE help me with this...I hope somebody will
respond with some help!! Please!!!!