Have you tried yet? the MobiChat’s MIM (Mobile Instant Messaging) as a free service to be downloaded to your cell phone.

Mobichat is a messaging service that offers complete interoperability between fixed IM (such as Laptop and PC based) and mobile IM users. MSN Messenger, Yahoo Messenger and AIM are all accessible via MobiChat.

You can chat to buddies from multiple protocols simultaneously, this application is streamlined and has an easy-to-use interface. To check your cell phone’s compatibility click here.

After you have checked your compatibility you can download the respective file from their website.

Works great both MobiChat’s Symbian and Java applications.