Fantastic help but to make life easier for those that follow the LaserJet 1100 Driver (and many others) are available through windows update and following this link will eventualloy lead you to this quote from the HP website...
"Print Driver Available in Windows 7
Print drivers for your product are available within the Windows 7 operating system.
LaserJet model specific printer drivers are currently available within the Windows 7 operating system. Installation of these drivers can be performed via Devices and Printers , formerly known as the Add Printer Wizard .
NOTE: If the model specific driver that you are looking for does not appear in the list of available printers, clicking the Windows Update button underneath the list of available printers may provide additional drivers to choose from. Requires opt-in to Microsoft Windows Update and Internet connection. "