Server Apache with virtual host

[hacku69]

I have finish setup my server : Apache+php+Mysql

Structure directory like this:

c:\web\site1\index.php
c:\web\site1\index.htm

c:\web\site2\index.php
c:\web\site2\index.htm

I tested with 2 folder site1 and site2. All's Ok (html and php's OK)

And then, i config apache with virtual host:
i test with 2 domain:
domain1 ==> point to ==> site1
domain2 ==> point to ==> site2

But i test with 2 domain, php not run that html run.
I try type: http://domain1.com/index.php ==> show error "No input file specified. "

Althought i config "DocumentIndex index.html index.php"

Please show me.Thks

[bpat1434]

Anything in the Apache error log? What's your actual Apache configuration file look like?