Hmmm, first of all, consider a version upgrade
!
For the fonts, you just need to download the font files (.ttf , .fon, .ttc) and put them in the Font directory in c:\windows (I'm on a pc with xp, but the same process should work with most win versions), on the next Photoshop startup all the new fonts added should be on the font list.
For the effects, I really don't know, my first photoshop version was 7, now I use cs2 but I guess there's a way to add external effects/filters... I'll ask around a bit.
Hope this helps.
nic