Problem with css rule

[Fireman2811]

I am using Dreamweaver CS3 and this is the first site I have done in it. I created a dwt and am now trying to insert divs in my editable region (which I did succesfully) and am now trying to apply a css rule to each div. When the window comes up to specify the name of the rule and to make the selection to define in, (new style sheet file OR this document only), this document only is selected and greyed out. When I specify the name and click OK, the window disappears and nothing happens. The rule didnot apply and is nowhere to be found. Any help on this issue would be appreciated.

[MrMJS]

If you make an external css file you should be good to go, that is what I had to do.

[IL14N4]

If this is the case, the css rules doesn't apply because the part of the header were the link to the external style sheet hasn't being defined as editable. Go into code view in dreamweaver and apply an editable region to the head of the document.