Help with Diagnostic Error messages?

I have a Dim 8400 and am having HDD problems.  It started with en error during boot.  (missing or corruptted system32 file -- isapnp.sys)  Tried to reinstall file and have no access to HDD (MAXTOR 160 GB SATA).  I ran the following tests on the Dell Diagnostic Disc and got these messages:

 

Read test fail:  0F00:0244

Verify test fail 0F00:1A44

Confidence Test fail: 0F00:1344

Seek test fail: 0F00:0244

 

I have also received a fail code 7 on another test.

 

I know it sounds like a bad HDD, but is there a way to get around the bad area and still use the drive?  Is freezing the drive worth trying?