How to launch an application

Hi
I want to launch an application when we click the finish button in Nsis. please tell me

Please read the MUI2 documentation (Reading other posts from you, I guess you are using MUI2, right?)
It's all in there.

yes, i am using MUI2

I think:

use ( !define Customfunction_leave FinispageLeave).
Exec
ExecWait
ExecShell

Pls see it in NSIS document

Well, MUI has it build in.
Look for MUI_FINISHPAGE_RUN.

Thanks its working