I tried different methods but none seem to work.
These are the entries from the code. The images have no gaps embedded.
[Progress]
Bitmap=gimmick\progressbar.bmp
LeftWidth=0
RightWidth=0
TopHeight=1
BottomHeight=1
Trans=0
PerPixel=0
[ProgressXP.HorzEdge]
Image=gimmick\ProgressBarXPHorz.bmp
Trans=0
PerPixel=0
ChunkGap=0
ChunkSize=0
LeftWidth=0
RightWidth=0
TopHeight=1
BottomHeight=1
ContentLeft=0
ContentRight=0
ContentTop=1
ContentBottom=1
[ProgressXP.HorzBlock]
Image=gimmick\ProgressChunkXPHorz.bmp
LeftWidth=0
RightWidth=0
TopHeight=0
BottomHeight=0

Thanks