I actually got it working!!!! I feel I am stating the obvious to the Hebrew users who already KNOW the answer and didn't have time to respond.
There is a package called "hebfont.sty", written by Boris Lavva, which has created macros to use all the hebrew fonts (culmus, and the old default ones) as \DeclareTextFontCommand{\text..}{\fontfamily{somefontname}\selectfont} The package was apparently installed in Windows by the culmus.exe pointed to by the lyx wiki page on setting up Hebrew. I have seen that this package is a part of ivritex as well. He lists there all of the following culmus fonts by their names: david, frank, aharoni, drugulin, yad, ellinia, miriam, nachlieli, as well as the old fonts which came with previous latex distributions. These \selectfont commands get cancelled every time a language change is made from Hebrew to English or math, so they are good for a few words, a paragraph or so, but I found an explanation how to change the default font of the entire document and other font related commands here: http://www.cl.cam.ac.uk/~rf10/pstex/latexcommands.htm so \renewcommand{\rmdefault}{ellinia} will change all Hebrew in the document to the culmus font Ellinia (for example). It isn't exactly what I want since it also changes back the English font to its default cmr (It was lmodren), so I will actually have to look how to change only the left to right parts. There is much more variety in the culmus fonts, and they look better. Thanks for everyone who replied on and off the group. Miki