What exactly should I be looking for? I have no clue when it comes to bios settings and the manual isn't very enlightening either.
You cannot change your memory settings/timings with your particular motherboard.
Bottom line is that your Patriot 4GB memory modules are not 100% compatible with your board. According to Biostar's website your board is only fully compatible with 1GB Patriot modules.
Here's the link: http://www.biostar.com.tw/app/en/mb/memory_report.php?S_ID=546