need help useing muliple ppp connections

[davidscomputers]

hope someone can help
i have just changed isp and they have give me 6 static ip adresses
so i have put there router in bridge mode so that i can connect eth0 to one port on the router for first ip address then connect eth1 to another port on the router for second ip
i have setup ppp0 with the username and password and the first static ip details
i have setup ppp1 with the username and password and the second static ip details
but it only connects to ppp0
is there an easy way to get both ppp0 and ppp1 to connect on boot