Over thirty years with all manor of computers from Apple II+(1980), IBM 360 Mainframe, seismic data processing on CRAY SMP, and Digital VAX, Business Data processing (80's - 90's) (JCL,Cobol,ALC) on IBM 360 - 370 mainframe programming, PC and LAN support start 1986, Cobol, dBase, Paradox, MS Access, MS IIS, Novell Netware 3.x-4.x, OS2 v1.3 - Warp, Win3.1, Win95, (NOT WinME) WinNT, Win2K, WinXP, (NOT Vista)), Win7, Win2k Server, Win2003 Server, Win2008 Server, Cisco, Netgear, D-Link, Linksys, Routers, Switches, 10Mbps thru 1Gbps, Apple, iPads, iPods, Kindle, Motorola, Large,medium and small business support and residential PC, networking (wired and wireless (A,B,G,and N) and multimedia support.