rheenen: If possible, simply copy the files "simple.exe" and "gd204.dll" from the GapiDraw distribution (i.e. download GapiDraw 2.04 from www.gapidraw.com and install it). The files are located in the folder:
\\gapidraw204\samples\simple\ppc\arm (or something like this)
I have a 3870 and GapiDraw works fine on my device...