OPNET , The application has failed to start because COREDLL.dll was not found -

OPNET , The application has failed to start because COREDLL.dll was not found -

i'm trying modify standard model in opnet (install opnet in win xp) , have omitted stdmod in preference network simulation repositories. however, when want run project, error :

"the application has failed start because msvcr90.dll not found. reinstalling application may prepare problem"

and add together msvcr90.dll ...\microsoft visual studio 9.0\vc\ce\dll\x86. error changed to:

"the application has failed start because coredll.dll not found. reinstalling application may prepare problem"

i searched lot cannot found useful. how can solve problem? give thanks much...

dll