Free download hp laserjet 1100 driver for windows 7

Though I have an all-in-one color printer for pictures and other documents, overwhelmingly I write short stories (and some long ones) but Great American Author not me! LOts of drafts, lots of reports for my job--all in black and white, the singular ink that makes the color "all-in-one" less useful and much more expensive. I found an HP LaserJet 1100 b/w laser printer with a full toner cartridge in the PC/Printer, etc. tomb in my garage. Lo and behold the HP LaserJet 1100 works! I purchased a USB adapter that connects with the "smaller" proprietary connection on the HP and I know the my Windows 7 Home edition is communicating with it. Does anyone know where I might be able to download (free hopefully) the drivers for the HP LaserJet 1100 so it will work with my Dell Windows 7? (Unfortunately, the sellers of the USB/Parallel Port adapter cable told me it was "plug-n-play."    

Looking at the 1998 HP LaserJet 1100 Quick Reference Guide that I do at least have, I'm not sure that I've been had!!!   Any help is greatly appreciated!!