stepper driver help

My conversion project is going pretty slow right now- I am searching
around on the net reading everything I can, to learn about what I am
doing. Educated types might even call what I am doing reasearch...
not sure if it is though as it is pretty fun so far :>

Anyway, I had a lot of really good advice when I first posted- I
hope I did not offend any of you with repeditive questions!

I have also been hunting high and low for a bipolar stepper driver
circuit that will go more than 2A, but they seem to be rare devils!

I have found two 2A bipolar drivers and I keep wondering what the
restrictions will be if i use them with Nema23 size motors. I know
this is a difficult question to answer, but can anyone give me a bit
of insight here?

Thanks,
Stefan