Sending Multiple Words to Another Program

How would I output a sentence with VB.NET?

Example: Your program and Internet Explorer are open, your program outputs "http://stackoverflow.com" and presses "{ENTER}", and it will go to the page.

Example: An auto-talking bot for MSN.

If you mean "send a string to a running program", I think you're looking for SendKeys

Edit

SendKeys takes a string argument (that's why it's named SendKeys, not SendKey), so yes, you can send "sentences".