I hope Ira in Dallas can read your message because Ira is an expert about Malpensa to Como transports :)

Anyway I found the following time table for bus service at this address: http://www.sea-aeroportimilano.it/Malpensa/collegamenti/collegamenti.htm and click on in PULLMAN.

From Malpensa Airport to Como from Mon. to Sat.: 7.23 9.40 11.05 13.00 15.30 18.00

Sun and holidays: 7.23 9.40 11.05

Hope it can help, Marco in Milan - Italy