At the moment I have about 12 - a new one should be delivered on Monday (BENQ 1655). Have a computer in the kitchen, my home office, my bedroom, and in the dining room (next to another computer that is just for my grandchildren to play games on) plus the one at my work office. Also have three systems as spares in the basement. All are Pentium 4 (1 GHZ or higher) with at least 512 RAM most with 1 GIG. I teach computers at a local private college! Also have about 6 external hard drives that I rotate as needed - one just stores my grandson's (6 years old) PS2 games so I can burn new ones when he scratches the old ones). I store my digital pictures and backups on some of them. Also have 5 scanners (Epson and HP), 5 InkJet printers, 3 laser printers, 8 Zip Drives, 5 ORB drives (2 GIG). My computers all have SCSI and Promise add in cards so I can run up to 8 IDE devices. You asked!!