Subject says it all, I guess...
I have an offer for the older AF 75-300 which gets a very good Ken Rockwell review here: http://www.kenrockwell.com/nikon/75300.htm
If I try to use this with a D60, what will go wrong?
No autofocus, and unless you can find one for very cheap they're not really worth getting. It should be worth noting that that review was made in 2005 (and probably on film) so I wouldn't read too much into it.