Change Style Dropdown

[Art]

I've just begun using Excel 2007. I've not been having fun. Hopefully
someone can help me with this.

In Excel 2003 I had a style dropdown in which I put only the styles I
wanted. Now, in Excel 2007 I seem to have a style dropdown that has what
"it" wants in there. Maybe there's another dropdown that I haven't yet
discovered.

I would like to remove the things that I don't want, and put in what I do
want. I'm having trouble with one particular instance. I'd like my default
scientific format to have 4 decimal places. I created a scientific format
with 4 places. If I highlight a cell and click Scientific in the pallete, it
works. If I use the dropdown, I get the 2 decimal place default.

Apparently I now had 2 scientific formats. I deleted mine, and thought that
I could modify theirs. I could not figure out how.

I'd really appreciate some advice on this.

Thanks

 

[Sean Timmons]

Thinking this pretty much covers Styles:

http://office.microsoft.com/en-us/excel/HP012167321033.aspx?pid=CH100648351033