installer program calling another installer

i have a set of three packages for which i have created 3 installers(.exes). Is there any way where i can program the installer to call the second installer automatically to start the installing process???

hope ive put my question properly.

sunil

To call an external application use Exec or ExecWait.

Search in the docs for internal functions if you want to call the app e.g. at the end of the current installer (.OnInstSuccess)