How do I open web-page?

I'm new at this programming stuff and the forum, so I hope you can bear with me.... I didn't think my question warranted a new thread - but here's my question:

I'm creating a form in word and would like to have buttons that are hyperlinks to documents on a website.
How do I make the button a single word but link it to a web page and make it open in it's default application?

I've tried to write the code, but the Word doc crashes. Am I missing some code? :ehh:

AND.... I can't seem to turn off the design mode - when other users get the form, the design mode is engaged automatically.

Please help!

HUGE Thanks in advance :D