I've finally got my two LCD Topguns running brilliantly; calibrated well, buttons set and working great in MAME.

However, If I leave them plugged in before I boot the PC, my PC hangs at the bios screen. It continues to boot fine once I remove the guns from the ports, but I don't want to have to wait until it boots every time to plug them back in. Secondly, I have my PC boot straight into Mamewah as the shell (rather than starting explorer with a clear desktop and having the frontend added to the 'startup' folder as some do). In order to have the Topgun control panel load before the frontend I have to do it the way I mentioned in brackets above, which isn't as clean.
So basically I'm asking:
1) Why is the PC hanging at the bios with the guns pugged in and how do I rectify this?
2) How can I keep my clean startup sequence (shell changed to Mamewah in regedit) and still have the Topgun drivers/panel load first?