Almost all our desktops have gig nic cards. Our cabling is cat5e. It seems
the bottleneck maybe the 10/100 Procurve 4000m switches we have.

I am investigating if there will be any distinguishable difference in speed
when running applications or copying data over our LAN if I were to switch
out our 10/1000 switches with gig switches.

Have any of you made the jump? Any suggestions as to what I should be
looking for in equipement?

We are a small shop of 75 users. Currently most of our servers are running
in ESXi on Poweredge 1950 severs. Our main file server is still running on
bare metal Poweredge 2850.