The Talbot Belmond Public Library Board of Trustees has decided to open the library for the use of computers on a limited basis beginning October 7.   Patrons will be able to make one-hour appointments to enter the facility on Wednesdays from 10 a.m. to 6 p.m. and on Fridays from 10 a.m. to 3 p.m. Browsing for books and other services inside the library will remain unavailable.   The library will continue to offer book checkout, faxing, copying, printing and scanning through curbside service. For more information or to schedule an appointment, call 444-4160.