which se phone have contact grouping for ringtones?

[AgentAlpha]

hey anyone know which se phone can allow me to group contacts into user defined groups (not for text msgs)? So that i can assign different ringtones to different groups and if a particular caller is within a particular group different ringtones can be played.

i am using z710i which doesn't have that function ... funny thing is my old Audiovox (i forgot the model name) has this group function which is very convenient :P

[LUIZZZ]

flash the cellphone to w710 you can put any ringtone if you want

[AgentAlpha]

no i m not talking about how many ringtones i can put

i m talking about ... if i can group contacts togethers into particular category