32bit VSTi's won't run in a 64bit wine enviroment. There are ways to do it
though, I believe, including working inside a 32bit chroot'd sandbox (google
for it) containing 32bit binaries and libs but if you are going to jump
through that many flaming hoops you might as well just install a 32bit linux
in the first place. Don't feel bad about doing that either. I run an AMD
64 with a 64bit debian for trying stuff out and messing around and a 32bit
debian just for music production.