[Seaside] Seaside URL question

[Dmitry Dorofeev]

Hi all.

I run Seaside with Comanche using WAKom default.

So i have all my apps available under /seaside/*

I tried to change it to get rid of /seaside prefix
I tried even to have it looks like /app/*

No luck so far. It just show me '404 Not found' or '500 Internal Server Error'
Is there a safe way to change basePath for all running seaside applications 
so i can keep my configurations and may be even sessions ?

Thanks,
-Dmitry.