The old machine that I installed Windows XP on in 2009 is now under a desk next door. 1GHz Athlon 32 bit, 40G hard drive, old Radeon card and 512MHz of memory.
It does have 2 removable media drives: one DVD rewriter and one DVD drive.
This is, now, the sort of machine you'd throw away - it won't handle Windows 7 well: it barely handled Windows XP It flies under Debian 6.0 with libreoffice from debian-backports.
It will soon go on to a friend of mine whose computers are even older: he's likely to use this machine extensively because it has real serial ports.
Use Linux - it makes sense on any hardware.