[Typo3] creating a basic extension : how can i add a select/option form element in the BE/plugin

[typo3-ml at w3tex.com]

Hi,

I  just followed the "creating a basic extension" PDF tutorial.

everything works OK.


now I need to add in the Back end / plugin form
a <SELECT> form element
using selectable items provided by a database query.

something like this
<select name="categories">
	<option value="1">skate</option>
	<option value="1">bike</option>
	...
</select>

which file should I modify to add this form element in the BE/plugin ?


please help ! thanks !!