Flash Linker Roms

[TeaWu]

I am thinking about buying the Advanced Flash Linker and I saw that you really gave good advice to John_UK who is a newbie too. That already helped me a lot but I still wonder bout some things.
1. It's easy to find plenty of GBA Roms on the net, but they are made for Emulators. Are they working with the GBA too? Or do I ve to find special ones? I got the Wild Card Copy Station for the SNES but couldn't get the Roms from the Internet working with it yet. 2. And is the cadridge they deliver with the kit same size as an original one?
Thanks very much if anyone could help me