Although 757 service to ALB is a possibility, I don't see it happening anytime soon. The 757 is a relatively high capacity aircraft, seating approx 190 passengers in a two class configuration. Most airlines reserve this aircraft for their high capacity routes, and I don't believe ALB is a high capacity destination for most of the majors. Current passenger scheduled service to ALB consists exclusively of narrow-body, low capacity aircraft.
Northwest will definitely not initiate 757 to ALB. The only have about 40 in their fleet, and these are reserved for the highly profitable east coast (LGA, DCA, BOS, EWR, PHL), and west coast (LAX, SAN, SFO, SEA, PDX) markets.
United: Also very unlikely. United has an enormous 757 fleet, but these aircraft are used to fly to large economic centers across the country, such as Detroit, Atlanta, and San Jose. Albany is not considered to be a major economic/business oriented destination, which would be likely to yeild a high proportion of business travelers, and thus high capacity aircraft.
Delta: maybe a possibilty. I believe they have the largest 757 fleet in the world, and they fly to cities that most majors consider to be low capacity destinations.
US Airways: Will never has a 757 to ALB. US has a relatively small 757 fleet, which are reserved for high density routes out of PIT, CLT and PHL. Including destinations like LAX, SFO, DCA, LGA and MCO.
Continental: Also a limited number of aircraft, which serve major business centers on the east and west coast.
American: A relatively large 757 fleet; however, a great proportion are reserved for South American routes out of Miami, in addition to their transcontinental service.
These are my two cents.
Call tower eighteen-four at the marker...Good Day!!