Many of the nokia, motorola and sony erikson phones come with pre-installed IM applications. It is present in nokia as “IM/Chat/Presence”, in sony erikson as “My Friends” and in motorola as “IM”. These applications are based on IMPS (Instant Messaging and Presence Service). Mobjab.com provides free IMPS service. So go to this site and get new account. You can also find the setting for your handset there.