are tamron lenses good lenses? (i have no idea. none. at all.) i've been posting alot these last few days, but i'm so scared buying my first camera. i know i want the n80. this is the auction i'm looking at: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=15238&item=3870206341&rd=1 what do you think? and this is very important too: will these lenses work on a nikon d70??? i'm so bad at things like this. once i have a camera, i'm good to go. but everything dealing with what lenses and what brands and blah blah... oh, i'm so overwhelmed. thanks so so so much.