How to filter a recordset using a combo

Hi,

I have almost no experience in ASP bu tI need to develop a small site linked to an access database in order to load data.

So, in my site I've got two combobox or if you prefer List/Menu controls.

It's working ok, I mean, if I choose an option in each combox it filter.

What I need to to have an option in each combobox to not filter, such like an option saying ALL, so if I choose the option ALL in one combobox it would show all records.

I hope I was clear.

Please help.

Thanks.

Marco