ie.Document.All("combo1").SelectedIndex = 2
... so it is posible choose third item of combobox

for example :
<select name="target">
<option value="~" selected>-color-</option>
<option value="Red" >Red (free)</option>
<option value="Green" >Green (full)</option>
<option value="Yellow" >Yellow(free)</option>
<option value="Black" >Black (full)</option>
<option value="White" >White (free)</option>
</select>

how I choose item (for example "Green (full)") by its name (so "Green (full)")?