sequence analysis software

[Claire Kinlaw]

As part of a team studying molecular genetics of coniferous trees, I
am seeking advice about the purchase of software to analyze DNA and protein 
sequences and to perform database searches.  At present, we access IG suite
programs residing on a USDA VAX computer.  As this is somewhat cumbersome, 
we are looking to purchase a system to reside in house that is both easy to
use and versatile.  We are particularly interested in advice from those with    
experience with Macintosh and Unix workstation systems.  Thank you in advance
for your help.