I have a Table which I am using as the data for a Combo Box on a form.
I think you mean the table is the combo row source. If it's bound, you could mean values entered into the combo go into the table, but I presume the former.
You could do what you want by using the OnChange event and actively filter the list by running a sql statement in code which uses wildcards around the text being typed in. However, I think you will take a noticeable performance hit if the records being filtered are on the large side, plus the event will run on each key press. It might start to look clunky and not respond fast enough to the user's input.
IMHO, a combo is usually used to supply a list of choices that are not so large or complicated as to need wildcard filtering.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.