Solved Force Laptop to Ignore Lid Closure

I've an old laptop I'm using as an AMD64 pkg builder and a development box, as such it does have a local X server even though I don't access it directly unless it breaks down and I need to give it CPR.

It's an ASUS Aspire 5517 for the record. I don't want it sleeping when I close the lid. How do I completely disable suspend, as I think that's probably the simplest solution. Alternatively, how do I force the system to ignore a lid closure event?