@MontrealCL
Hi! Welcome to Amiga.org:-)
Aaah the GVP A530, I know it well. I used an Amiga 500 with an A530 for a long time. The GVP A530 uses GVP SIMMS, not the industry standard PS/2 SIMMS. The SIMMS ware made by GVP and only work in GVP products.
About Kickstart ROMs and Operating systems. The Kickstart ROM is a DIP chip in the computer. Simply put, if you want to play old school games then Kickstart 1.3 hands down is your best bet for compatability. If you want to use the most modern OS possible, then you should upgrade to a Kickstart 3.1 ROM and you can use OS3.1 and possibly OS3.5 or OS3.9. Just keep in mind, switching the ROM to KS3.1 will break many if not most old school games. Of course once you are more familiar and comfortable with the system, there are degraders and ways to softkick older ROMS for game compatability.
Don't let your head swim.. Learn a little at a time and ask away! Amiga.org is the friendliest Amiga site, there will always be someone to answer your questions.
