Choakster

Well for starters ya gotta be more specific like what kind of OS are ya using win xp/9x/mt/me etc .. THen prolly help if I saw the error your getting ..

But until then try this make sure you have all the files in the same folder where you have sidl in
You should have the following files in the folder .. My guess is your prolly missing one.. Also a quick note if you run XP you have to grant sidl permission to run FYI .

SidlWidl.exe
AxSHDocVw.dll
GraphicSurface.dll
JRH.Glyphs.dll
JRH.Utilities.dll
PaintLibLoader.dll
SHDocVw.dll
SIDL.dll
SIDLControls.dll
Syncfusion.Edit.dll
Syncfusion.Grid.dll
Syncfusion.Shared.dll
Syncfusion.Tools.dll
SidlWidl.exe.config
QuickLoad.XML
EQToolboxTemplates.XML

Also a quick note if you run XP you have to grant sidl permission to run FYI . SO make sure you have all those files in the folder . Run sidl from the folder dont make a shortcut for it just leave the EXE in the folder and run it from there ...
Good Luck