my newer comp came with no serial port (RS-232 if i remember) and i have devices that use serial and future mods that use serial. My question is should i get a USB to serial which are 30$, get a parallel to serial adaptor since my printer is USB (cheaper) or build a usb to serial. i searched for the latter but ddidn't see anything too promising. It would be cool to try and build it. what should i do?