you should use bitmap fonts, they are very easy to deal with,
look at this link:
**broken link removed**
and you can use convdbf (it's can be dl-ed from there) program to create .c style constants from a bitmap font file.
I recommend to put out an "A" letter yourself first with just plain
commands to understand how it works and than create an include file from your font and write a LCDputstr function.