Software Deployment

You can include 2 msi into one only if you are using "nested msi" type custom action. You can try

Not recommended @ Nested MSI.

Please see other post for its disadvantage's.

incorrect information "itolutions"

nesting was deprecated with windows installer 5 (windows 7)

you can also run multiple msi's from a single msi since windows installer 4.0 or 4.5 I can't recall exact version.

there was a new api added called msiEmbeddedUi which allows you to setup an msi message proxy and therefore chain multiple msi's from within a single msi.

sql and visual studios are examples of such a technique.

http://itninja.com/question/how-to-create-wrapper&mpage=1&key=wrapper+MSI%BDt

Please go through this post.

Create MST files for your MSI files, add the extra files you need to deploy in the MST files.

I created a cab file file and gave the entry in media table but while installtion i got the pop that .cab file don't have digital certificate..
how to solve that problem...

1. [font="times new roman"][font="times new roman"]Create the Blank MSI(wrapper MSI) with a file.
2. Create the WiseScript.exe project file, which will install the source silently.
3. Embedded the wisescript.exe in to the Blank MSI through Custom Actions, Which will execute at the time of Wrapper MSI installation

[font="times new roman"]

The Windows Installer engine isn't multi-threaded meaning that you can't execute 2 MSIs at the same time.

You have also assumed that the OP is a Wise user. He's clearly using Orca/InstEdit - why else would he be editing tables directly?