Problem networking Virgin Broadband on a Netgear DG834GT router

Hi, I know this isn't much about Dell but i;m on a dell now, and no where else is helping! We used to have plus net broadband but switched to Virgin a few days ago due to plus net being . On our router we have to configure it, neither negear nor virgin seem to be able to help. I wanted to attach a screenshot but didn't know how, I need to put in my log in and password, idle timeout, internet IP address, DNS address, and if NAT is enabled or disabled. There is also ADSL settings which has Multiplexing Method, VPI values and VCI values. I can also choose whether the "Encapsulation" is PPPoA (PPP over ATM) or PPPoA (PPP over ethernet) I have tried several times with this but to no avail, I can get the internet on one computer if plugged into the virgin modem, but not when the virgin modem is plugged into the router, I was unsure if username should have @virgin or @blueyonder or something as Plusnet used to have @Plusdsl.net. Sorry if this is confusing but I'm desperate, plus net gets shut off in a few days and then I will only be able to access the internet plugged into their modem, and when there are 2 people do buissness work and 2 doing school work it will be very hard! Thanks for any help!