Radio button disable?

[HockeyFan]

I'm wanting to display some radio buttons on a page, but have them disabled.
The page works fine if I don't disable them, but as it is, this code doesn't display the buttons at all. What's wrong?

<Form Method="Post" Name="frmSequenceSelect" Action="LVUCWeb.asp?OP=SequenceSelect2">
<TR>
<TD Class="SequenceSelectTableCell">
<Input Type="Radio" Name="optSequence" Value=1 DISABLED>
</TD>

[Rincewind]

<input name="asdf" type="radio" disabled="true" value="fdsa">