HTML - Drop down width?

[Daniel McCool]

Right now, I added spaces in my drop down text to make each drop down control line up, but this doesn't get them perfectly aligned (especially in netscape). I would like to be able to set the width of these drop downs. Can you use classes or something or CSS ? If so, please help.

[mendhak]

<select style="width:300;">
<option>Mendhak Rules</option>
<option>Daniel is not cool</option>
</select>

[The Hobo]

It's always good to specify the units, ie: 300px