I've also been playing with PICAXE microcontrollers again. Here is a pair of routines that can be used to get/send bytes using the TI hardware link protocol, for example. I am yet to do anything useful with them, however.
Windows programming has never been my favourite side of things, but I have also started work on a Z80 ASM "IDE" called Latenite:
It's mostly there, but now needs features galore to be added. So far it can be used to compile and source code, which is the main thing.