here's a few electronic stepper controller links , but if electronics building is not your strong point , i am sure their are many people on this forum that can help or assist , or give me a shout .
http://www.embeddedtronics.com/ ( look at microstep)
http://www.fromorbit.com/projects/picstep/index.php ( look at picstep )
http://webpages.charter.net/pminmo/cncelectronics.htm
this list is by no means exausted , as they are many available
hope it helps , instead of total confusion !
Dave