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I am creating a new component, and now how to do this.  This component, however, needs another component (i.e. com_registration provided in the core installation) to be modified slightly.  When installing my new component, I would like to replace a file in components.com_registration with a new file, and ideally put back the original file if my new component is uninstalled.  I could obviously manually upload the modified com_registration file via a FTP client, however, would rather use the Joomla Installers/Componenets/Install New Component backend.  Is it possible to do this, and can the XML installation file for my new component be modified to effect another component?

Thanks

I am still trying to do this.  Any ideas?

Basically,when adding my new component, would like to replace a file in another component.

Thanks

you have to rename your modified registration.php file to components/com_registration/registration.php by yourself (rename(), copy(), whatever)
you can do this in a com_install() - function of your component (install.your_component.php)

Thank you Leagueman.  That worked great!  I never used com_install() before now, but will do in the future.

One question related to com_install.  I have seen people have it echo html (i.e. description, licience agreement, installation feedback, etc).  I did the same, and while it did not cause any problems, I didn't see where it sent anything to the screen.  I added some code in com_install and com_uninstall to confirm all went well, and give feedback.  Is it possible to have com_install send text to the screen?

Thanks!