The intent of this forum is to discuss my DOS TSR programs (available at http://bretjohnson.us), how they work and don't work, new/missing features, status of updates, and anything else related to them that may need to be discussed.
USB-to-RS232 is one of the additional device drivers that I would like to see as well, along with drivers for CD/DVD's, Ethernet, Sound Cards, etc. I'm busy working on an OHCI host driver right now, and won't be able to work on anything else new for several months.
If you're interested in programming, you can certainly try to write the driver yourself.