I need help connecting to my wireless modem

I am new to Linux and need help trying to get my wireless modem to work.  I have a 2Wire 1000HW wireless modem that I got from SBC about 3-4 years ago.  I have gone to Ubuntu's wireless trouble shooting page and verified that the wireless card is recognized by the system:   DISABLED             description: Wireless interface       product: Dell Wireless 1390 WLAN Mini-PCI Card       vendor: Broadcom Corporation       physical id: 0       bus info: pci@06:00.0       logical name: eth1       version: 01       serial: 00:1a:73:39:c1:a8       width: 32 bits       clock: 33MHz       capabilities: bus_master cap_list ethernet physical wireless       configuration: broadcast=yes driver=bcm43xx driverversion=2.6.20-15-386 latency=0 link=no multicast=yes wireless=IEEE 802.11b/g       resources: iomemory:68000000-68003fff irq:17I know the wireless connection works, because I have a Mac and two XP machines that work off of this modem.  I can create a wired connection with my Ubuntu laptop, but that's it.  SBC will not help if the o/s is Linux.  I tried to download the ndiswrapper tar file, but it needs to be compile.  That failed b/c I'm not sure how to get the ndiswrapper directory to point to the kernel.  Does anyone know of a good way to get my wireless connection working on Ubuntu 7.04?  FYI, I have been to Ubuntu's wireless troubleshooting wiki, I did multiple searches on this site and a few others on wireless modem setup.  So if you know how please let me know (remember I know next to nothing when it comes to Linux).Thanks,JW