serial support

[draughted]

ive got a serial controller and bi polar drivers that i have just got to controll my steppers for the first time using the propriety software, but the package is very limited. i have no g-code input. now im on xp controlling via usb converter and im looking for a new controller software package that will accomidate serial output. ive asked before if mach3 would do it and was denied.
so if anyone has any suggestions that would be great.

[beege]

Did you look at Plotter software?

[draughted]

what is plotter software exactly? i'm asuming its 2d only
what im looking for is something just like mach3