seleccionar un radio buton segun un get

[alfil123]

mas somenos asi es el combo
<select name="country">
<option value="Not Select" selected="selected" class="lista">PLEASE SELECT</option>
<option value="Albania" class="lista">Albania</option>
<option value="Algeria" class="lista">Algeria</option>
<option value="Andorra" class="lista">Andorra</option>
<option value="Argentina" class="lista">Argentina</option>
.
.
.
.
.
.
<option value="Ukraine" class="lista">Ukraine</option>
<option value="United Arab Emirates" class="lista">United Arab Emirates</option>
<option value="United States" class="lista">United States</option>
<option value="Vanuatu" class="lista">Vanuatu</option>
<option value="Yugoslavia" class="lista">Yugoslavia</option>
<option value="Zimbabwe" class="lista">Zimbabwe</option>
<option value="Not in list" class="lista">Not in list</option>
</select>

Gatov, ya como hago eso, como recorro el select y le introdusco selected="selected"