I am having a lot of problems with my Linksys BEFW11S4 Ver. 2 and sprint(Prestige) 645 series DSL modem. every time I try and set them up they don't seem to get along. The router firmware is 1.45.10 and I don't know what I need or what the firmware for the DSL modem is.Could I get precise instructions on how to set them up so I can get on the internet on my laptop with my bro on the desktop? thank you for any help