Oops! You're right - I compiled an SSE2-only version...
I have now also compiled a non-SSE2 version (at least I hope so - I don't have any non-SSE2 hardware available to test it). Can you check if this version works?
http://www.stereotool.com/download/dsp_ ... onSSE2.dll
Save this file to your Winamp plugins directory (usually C:\Program Files\winamp\plugins), and select it in Preferences -> Plug-ins -> DSP/Effect.
If it works I'll put it on the download page. When you test it, please start with all the options turned off - a lot of optimizations are turned off for the non-SSE2 build, so when you turn on too many options it will probably block Winamp.
(Note: I know I can build a version that supports both SSE2 and non-SSE2. Unfortunately, when I do so the result is about 10% slower on SSE2 systems. Which is why I didn't do that.)