Hi,
If I follow your post you are saying you cannot program a Pic with the Inchworm from Mplab - correct ?
If so, why not -what is going wrong ?
The Inchworm is a clone of Microchips ICD2 programmer /debugger so you select ICD2 from the programmer or debugger menus in MPlab.
Check out Bluerooms site for details of how to use it.
The Pickit2 / clone runs fine from MPlab, it also has its own stand alone program V2.61 which allows you to Import .hex files directly without Mplab.
Just search this forum for the many many entries for a Pickit2 clone.
You will also see Pickit2 Lite plans from Blueroom the makers of the Inchworm, versions with pcb are also around.