Compiling helloworld.c with one floppy and no hard drive on the original PC required one disk for each of the following: (1) source code, (2) cpp.exe, (3) cc1.exe, (4) cc2.exe, (5) lib manager (can't remember the name - something like "marion"?), (5) and the linker -- I think it was 8 floppy swaps total. It blows my mind that my first HD was 5 MB and cost $800. Also missing was the programming side things: LocalAlloc vs. GlobalAlloc, low-mem HWNDs, etc. - ug - don't miss that...