Embedding PHP, Perl & Python into Installer

Hi

I plan on embeddng PHP, Perl & Python into an installer.

The installer is licensed under the WTFPL.

I'd like to make two versions;
One that embeds PHP, Perl & Python
& One that downloads PHP, Perl & Python

I'll obviously need to include checks for existence of the programs (eg; By checking registry/environmental variables)

Can someone please give me advice on how I can do this?

Thanks in advance,

Panarchy

ReadRegStr, and a download plugin such as Inetc.

Thanks