The emTeX package (see TeX systems) contains a driver for the LaserJet, dvihplj.
Version 2.10 of the Beebe drivers supports the LaserJet. These drivers will compile under Unix, VMS, and on the Atari ST and DEC-20's, and are available from dviware/beebe
Karl Berry's dviljk, which has the same path-searching code as his dvipsk (see DVI to PostScript programs), is available in dviware/dviljk