Not quite sure what you mean by "5 different remotes", or why you would want more than one to control the Viewsonic. However, you can use the Lookup Tool to see which remotes can supply TV 1330 (11330 for remotes which use a 5 digit setup code). Use "by Setup Code", select TV and enter 1330. Click Search, and on the next page, click on the "11" at the far right.

You'll see your Comcast remote, and some other cable company remotes. If you want a new remote, try the RCA RCRP05B ($15-20 at Walgreens, Sears, Best Buy).

Post the Toshiba model number, and we may be able to tell you a setup code for the Comcast or RCA.