OT: Is it possible to make a printer wireless?

[joe at actionline.com]

> Is your 20 year old printer a laserjet 3?  I used to work at GCC in the
> late 90s and they used a lot of them in the high tech center.  Those
> things were practically indestructible.

It's an HP LaserJet 4 and yes, it has been a reliable workhorse.
But it's just a printer, so I'm hoping to find a laser all-in-one.
Plenty of cheap all-in-one ink-jets new, but I don't need color
printing or the expensive print cartridge replacement cost.