Thank you for your post.
A FileMaker Pro runtime solution is designed solely for single-user and will not work via a network. Also, external sources are not supported. For more information, look at the FileMaker Pro Advanced Development Guide at www.filemaker.com/documentation. You can either use Instant Web Publishing with FileMaker Pro, or use Custom Web Publishing with FileMaker Server. If you want users to share FileMaker files over a network, then each user would need their own copy of FileMaker Pro.
How complex is your solution? A well written FileMaker PHP app could work for you. This would allow your team to access the files without having to buy a client seat for everyone. Instant Web Publishing is great for very small deployment, but using FX.php or the API for PHP would be much better. You will see a great improvement in speed, security and flexibility.
There are a couple of great books on Amazon on FileMaker Web Publishing and many very active forums.
As TSGal said Runtime solutions will not work, you should investigate custom web publishing.
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