No,the driver would need to be put in THEC64 Maxi's kernal and you can't just add one, same problem with the Mini.
Well, there might be a (difficult) way around this, by adapting fusys's tool to pokpeek/poke the C64's memory to fool it into thinking it has a modem attached. Or to communicate directly witith the particular BBS program on the C64.
Also, consider that I'm not able yet to PEEK/POKE all the memory space since it appears to be scattered around in VICE process map. But definitely it would be a cool thing to do... I hope to have time in the near future to try it
OK thanks all - That tool does look intriguing - and thanks to fusys for providing the source code - I guess this does show the limitations of TheC64 compared with, say, Ultimate 64, or original hardware, but hey - horses for courses I guess. Thanks again for replies.