apache and IIS working together?

[dimig]

I 've an asp site which turns on iis. Now I want to load a (pl/sql-html) page on Apache (also installed).
This works fine, put when I want to view the content of a field of my (html) page on Apache via my asp page on iis, I get an error Access is denied!
(other way around gives me the same error: IIS <-> Apache)

To make this more clearer:
- asp page (1) with button, onclick button -> open new window with page from Apache(2): OK
- button on page Apache (2), onclick go back to parent asp page and fill in a field on the asp page.
-> Error: Access is denied
How can I solve this?

* In my javascript code is nothing wrong, because if the 2 pages are on iis it works!
* I want to hold the iis server and apache server!

Question:
- How can I say to iis that the pages from apache can fill in some data in the fields of the pages from iis?
- Can you say that IIS needs to trust Apache and other way around? (the 2 servers are from me, soo...)
- Will isapi rewrite solve my problem? if yes, do you have an example of apache and iis? (I saw an article of jsp/Tomcat & iis working together, my problem is pretty the same... but Is there also an example how to implement it for my problem?)
- How can I solve my problem?

Thanks in advance,
Dimi

 

[paladin256]

Two questions. What ports are Apache and IIS running on and does the give anymore information other than access denied?