MikroTik

hi.i have a qustion about my router config.
My question is, i have 3Adsl line from same isp.then i want to share these 4 line to my all cliants through my mikrotik Rb750g...i mean ip 1-100=may use adsl1...ip 101-200 may use adsl2..ip 201-254 may use adsl3..so how can i configure that?
Plz anybody answer my question...kindly

Look up policy based routing in the wiki and the forums. You can also look at doing PCC for load balancing, also discussed at length in the Wiki and the forums.