even 250mm on a crop body isn't that "zoomy", i know what you're thinking and coming from the world of point and shoots, where you can digitally zoom and don't give a shit about quality, you're going to be disappointed with the reach.
the tamron is quite cheap and if you feel that is too expensive then maybe it's too early for a dslr. i recommend a used canon g11 or something to get you started in PHOTOGRAPHY. once you develop the interest, then spending 800+ on a lens doesn't seem quite as ludicrous as it does now
lens reviews http://www.photozone.de/Reviews
William Wood also was known by the name of William Charles Henry. He was born in 1864 and died in 1947. During that time, he wrote 10 books.
how will you be remembered?