I'm brand new to Ubuntu and therefore am the noobest of noobs. I hope someone can help.

I've just installed 13.10 on my Dell Inspiron 6400. When installing the software, my wired internet connection worked. However, when installation completes, neither my wired or wireless connections work.

My understanding so far is that it seems I don't have my Broadcom BCM4401 (ethernet controller) or Broadcom BCM4311 (network controller) drivers installed. I've managed to download these drivers from my Windows PC, but it appears I need Synaptic Package Manager to install them on my Ubuntu laptop, which itself requires internet access to install.

Does anyone know how I can get my internet access up and running?

Thanks