Qbasic has support for input and output to the parallel port. All you would have to do is port a module over from visual basic, or some other language, into qbasic that will output to the lcd. I think that this would work the same way for serial lcd's but I'm not sure.
porting a vb module over would be very difficult because qb's method for controlling the serial port is very different. However, I have been forced to look elsewhere because I can't order a crystalfontz LCD from Australia.