Windows 7 - Wi Fi Intranet For mobile devices

I've recently found an app on the android market that creates a website within a wi fi network were it makes a website from all the files and folders on the memory card. Well i don't realy use a usb cable anymore to get files off of my phone. It can create playlists for WMP to play from music or videos.

Well now i want to change it around and let my computer make a wi fi intranet web page so that i can stream videos and music and pritty much download anything from my computer over a wi fi network that is made by my HTC Desire S.

But when i google it only find results on stuff like wi fi internet and not wi fi intranet. If you guys know about of any apps that can do this for a folder on my pc or something alike or some kind of solution please let me know. Thanx

Ok ive found a solution thats even better than an intra net.
I just downloaded ES file explorer on my android phone, connected it to the network, set es file explorer to lan, added the new server, switched off my firewall, and i could veiw any file that has been shared.
The only drawback is that my firewall gets turned off any idea how to keep the network going but block the internet?
Reply me at:
WiFi Internet blocking