I have three systems, but gave one away (Athlon XP 2500+). My other system is an older K6 system running Windows 2000, but it needs a lot of work to get it going again. Then there's the current system I have now...
I have the computer I'm using now, an old P3 in my closet, my sister has her current comp, she also has a G4 laptop, she has an old Duron in her closet, then my dad has his computer and an Athlon 64 3200 laptop. 7 in all.