The axe module in the last beta release is still far away from being done (especially parent / child window support is missing)...
I know that there are still a few things left to do, but it should be nearing completion. What version are you using? Skid uploaded v1.36 of Win32MaxGUIEx a day or so ago that was quite a major release... If that was the version you are referring to and it hasn't fixed your child window problems, please can you post some code that demonstrates the exact problems you are having, and I'll have a look...
Thanks