html links in strings or GUI components possible?

there is not any easy way to do this. you should create a button or label in the position that you want and then in it's click use Application.OpenURL. if you want to show this inside a block of text then it will not be that easy with fixed layout GUIs so use automatic layouting. if you have a fixed screen resolution like in the iphone, things are easier because you can set the position manually.

take a look an vote for this in feedback