retrieving last record for all distinct users

[motorpsychkill]

I have a table SESSIONS with the following fields:

SESSION_ID		LOGIN		IP		TIMESTAMP

I am trying to select the last login record for all distinct users.  The
closest
I can get to is:

select distinct LOGIN,  TIMESTAMP, IP from SESSIONS group by LOGIN order by
TIMESTAMP desc

This kind of works but it does not get the correct IP for the last
TIMESTAMP.  This seems easy enough, but I can't seem to figure this one out
today.  Can anybody see what I'm missing?  Thanks!

-m