rariti do as smalldogn says ;)

For more info on the problem check out the following link:
http://developer.mozilla.org/en/docs/Incorrect_MIME_Type_for_CSS_Files

Give the table cell you want to scroll an id, then give it a fixed height, and set overlfow to scroll. Should look something like this:

td#id {
height: 400px;
overflow: scroll;
}

I would...

You don't want to do that. That would be very annoying and people would not stay on your site.

Declare a doctype...