how do i put bold text in a richtextbox

i cant seem to put bold text in a richtextbox in VB.NET...i dont know how to use the TRUE and FALSE there...hmm i can explain...i mean...it is not anymore like in vb6 wich i could say richtextbox1.selbold=true...how do i do the equivalent to that in vb.net? and in C#?

VB Code:

Dim fnt As New Font(RichTextBox1.Font, FontStyle.Bold)
        RichTextBox1.SelectionFont = fnt

tks ill try it

worked tks but how da hell would i guess that was the way to do that? vb6 was easy to guess how to do things here it sucks bad coz it is too hard :\

That's why you need some kind of tutorial.:)
I knew who to create a font at fly and when I tryied to use

RTB.SelectionFont.Bold = True

It gave me an error message that the property was read-only. Samething with other properties of font. But when I look at the property "SelectionFont", it said you can use it to get or set the font is rich text box. So I created the font of fly and changed the whole font.
These "features" really suck in VB .NET though.:(