effect processors on pc???

[signal2112]

does anyone know of a realtime software effects processor program for pc that actually works???
I have a soundblaster 16 isa (hey, it works great)400mhz amdk6, 128 mb ram.
a link to a site where I could download this would be great.
i tried this one on downloads.com, it had 100% satisfaction with the people who used it, I couldn't get the damn thing to work!!
oh well.

thanks.