You will more than likely have to root your device first, and even then, performance may not be satisfactory. Recommended minimum hardware for ICS (4.0) is 1 GHz dual-core processors and 512+ MB RAM. Your phone has 800 MHz dual-core CPU and 512 MB RAM.
There are numerous links that can be found online with rooting instructions for your phone, but since they are not on this forum and I am unfamiliar with the sources, I will leave it to you to make your own decision.