I have downloaded daoc full client, then i downloaded the launcher. I ran daoc let it patch. Then I ran uthgard launcher to run camelot.exe from my desktop, but all it does is pop more uthgard webpage tabs on my browser....

It sounds like you haven't installed the Uthgard patch? Look here: https://uthgard.org/howto#4 where it says,

Uthgard requires a special launcher that is different from what most other DAoC freeshards use. Don't worry though, we tried keeping it as simple as possible:

Install necessary dependencies for the Uthgard Launcher:
Microsoft .NET Framework 4.6
Visual C++ Redistributable for Visual Studio 2015 for x86 (the 64-bit version will not work since DAoC is 32-bit
Go to the Manage Account page.
In the "How to Connect" tab on the bottom, click the Download Launcher button, and run the installer.
Start uthgard.exe once (or use the shortcut on your desktop)
Choose the directory where your fresh install of DAoC is located, and select camelot.exe
(Optional) Go to Edit, Preferences, and select Full Classic for the best experience.
(Optional) In order to turn classic player models on, you'll have to do that from the character selection screen inside the game.
Click the "Play!" button in the top right of the main page to start the game.
Seeing an issue? Have a look at the trouble-shooting section below.

If you/ve done all of that and it doesn't work, follow the trouble-shooting steps.