>...I want to be able to switch between NTSC and PAL because lots of games don't run in NTSC by default...
I am not familiar with how the software switches between NTSC and PAL. I just use an Amiga 1200 that I bought from UK for software that does not run properly on NTSC Amigas. I do not think that a software solution would work in general as many games that I have directly program the hardware for maximum performance and efficiency similar to what MPDOS does as shown in picture in this listing:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320123603048