Windows 7: Connecting to Two Networks Simultaneously

So I need help being able to connect to a wireless network with internet access and a wired network with no internet access. Of course, being connected to both simultaneously results in no internet access. How do I go about doing this properly so I get internet connection and file sharing on the other network. Please use Layman's Terms, networking isn't my strong point.

Thanks!

PS: I also tried changing the interface metric but that didn't quite do the job because when I disconnected my computer from my router and reconnected, it didn't go back to normal and I lost internet access completely again.

Check out this Microsoft article: Create a network bridge

Yeah, I've tried that method too. It was actually the first one I tried, and it really doesn't do anything. Thanks for trying though. Any other suggestions?

Actually never mind. It seems that I've gotten it to work. Thanks for your help.

You're welcome.

It would be interesting to find out how you got it to work though.

Well for some odd reason, bridging the connections doesn't really do anything to begin with. However if you go into Network and Sharing Center>Change adapter settings then right click on either your wireless or wired adapter and hit Properties, then click on Internet Protocol Version 4 (TCP/IPv4), then click the button "Properties", in the General tab, click "Advanced", uncheck Automatic metric and change the wireless adaptor to say... 10, then do the same procedure with the wired adapter but change the metric number to something higher (25 or more) and it gets it to work. Just make sure you don't unplug the router or it may screw it all up. To fix it, just disconnect from the wireless network and wait till the wired network has established and such and then reconnect to the wireless network. I can't believe I just explained that while mildly intoxicated...

Well, all I can say is well done.

If I'd carried out that fix I'd be more than mildly intoxicated!