I have a 2 building network with about 150 computers in each. The buildings are connected via fiber. We had a power surge yesterday and the performance has not been the same since. I was planning on replacing all the old hubs with switches. I need a recommendation on managed vs. unmanaged switches (ie. makes and models). BTW, running about 240 win98's, a netware, a win2000, a "snap" server (don't know os) and the rest winxp. PLEASE HELP.