call logs & WM5

[misters]

Hi All :),

i have a SFR330+ or HTC 3600 under WM5

i like so much this phone and i regret just on thing,
the call log that is not group by contact.

I know that this functionality exist under WM6 but i think it is pretty heavy to change a rom only for this

so i would like to know if there is a parameter or a cab or a program to have the call log group by contact

thank by advance & have a nice day