[gentoo-dev] Installing over dial up

Hi, I was looking through the installation instructions, and it seems that Gentoo expects your computer to be connected to a 
network with an Internet gateway running for the initial install/setup.

Does Gentoo allow you to use a modem to download the packages?  I'm a humble home user with only 56K dial up you see :-)
(I can download and burn the ISO at work, but the PC I'll be installing it on is at home.)

It's a bog standard General Robotics external modem that's worked happily used with Mandrake in the past.

Cheers,
Matt.