Okay, very silly question, I guess... But I ran my site through the validator at w3 and it came back with a list of errors. (I didn't write the code, I just need to fix it.)

For example:

Error Line 19, Column 6: An head start tag seen but an element of the same type was already open.

Okay, so my question is, where do I find Line 19 Column 6? My FTP program doesn't number lines, but even if it did, I can't seem to find where it's talking about... And what is the column?

So, my underlying question has to do with FINDING the invalid code...

Any thoughts would be appreciated!