(No) Internet connection when more than one connection is switched on

[edek]

I have two connections and one problem:

2) first is my Internet connection:

My computer (192.168.0.110) > Router (LAN address: 192.168.0.2/ WAN address: 10.67.35.65) > my ISP

1) second is my LAN connection:

My computer (192.168.0.108) > Other LAN computers (192.168.0.*)

The problem: when I have only Internet connection switched on I am able to connect to the Internet, but when I turn on also the 'second' (LAN) connection I have no Internet. It appears that windows starts to think that it should use the 'second' connection to access the Internet. How to "tell" :) windows that it should use 'first' connection to connect to the Internet?

Thanks in adv.

Check in internet properties>connections
It shows that connections or not...if not then configure it.

[edek]

You have misunderstood my problem:
I have both connections configured.
Both have 192.168.0.* address.
Windows cant figure out which is the Internet connection.
My problem: How to tell windows which connection to use.

Thanks for trying, though!

Try this may it helps:
http://windowshelp.microsoft.com/Windows/en-US/help/33307acf-0698-41ba-b014-ea0a2eb8d0a81033.mspx

http://en.wikipedia.org/wiki/Computer_network
http://technet.microsoft.com/en-us/library/bb490611.aspx

[edek]

I've found my answer here (at least it looks promising): http://www.microsoft.com/technet/community/columns/cableguy/cg0903.mspx
I need to use command line 'route.exe' to set proper gateways.

good...i hope it get solved now.

[edek]

The key idea was to change the 'metrics' of my network interfaces - interface that is supposed to connect me to the Internet now has lower metric than the interface connecting me to my LAN. Now windows knows which connection to use as Internet connection :)
Solved.

How to change the metric see (it is exactly the same problem solved):
http://images.google.com/imgres?imgurl=http://mycapsules.com/com/tips/010/interface-metric.png&imgrefurl=http://mycapsules.com/article.php%3Fp%3D3%26id%3D54&h=488&w=404&sz=13&hl=en&start=15&sig2=JoS2bkU73hHp_0qTbx39NQ&um=1&tbnid=TsB4b6hwxIdZWM:&tbnh=130&tbnw=108&ei=6fTKRoOiI42QwAGMmfGkAQ&prev=/images%3Fq%3Dchange%2Binterface%2Bmetric%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DN
sorry that not in english :( , but pictures are very helpful

or in english (but more complicated):
http://support.microsoft.com/kb/894564

Thats Great :)
Thanks for putting a link here...

[edek]

How to change the metric see (it is exactly the same problem solved):
http://images.google.com/imgres?imgurl=http://mycapsules.com/com/tips/010/interface-metric.png&imgrefurl=http://mycapsules.com/article.php%3Fp%3D3%26id%3D54&h=488&w=404&sz=13&hl=en&start=15&sig2=JoS2bkU73hHp_0qTbx39NQ&um=1&tbnid=TsB4b6hwxIdZWM:&tbnh=130&tbnw=108&ei=6fTKRoOiI42QwAGMmfGkAQ&prev=/images%3Fq%3Dchange%2Binterface%2Bmetric%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DN
sorry that not in english :( , but pictures are very helpful

The link should be actually:
http://mycapsules.com/article.php?p=3&id=54
(sorry)