How do you make words upside down on the internet?

[mHeEeTem]

I asked a screenname qss and someone put this:
???? s,?oq?o? how did they do that??

 

[blobgi]

Black magic, crucify those heathens.

 

[DanielS]

Clever application of special characters. They didn't actually make anything upside-down. Those are just special characters that look like normal letters upside-down. You can find all the special characters you can make by going to Accessories on your start menu and going to Character Map (it may be in a sub-folder, I don't remember).

 

[Natt:t]

This website lets you convert the fonts:

http://www.sherv.net/flip.html

Just copy and paste one of them. If one doesn't work, try the other.