Using Rijndael algorithm with the System.Security.Cryptography namespace

I want to use the Rijndael algorithm to encrypt a string that a user has a inputed. I looked around for documentation on doing this and I have come up empty. Basically what I want to know is how it works and an example in vb.net on how it is used. I also need to decrypt the string as well, but i figure once I know how to encrypt, I can decrypt as well. From my reading it sounds like that is a good way to go to encrypting data. Any suggestions or information would be much appreciated.

I'd politely suggest your search MSDN. There is a Rijndael class available.

I found an example in the help. You might also want to check out TripleDES encryption.