[gentoo-user] Anyone running a gentoo guest on virtualbox?

[walt]

In preparation for the upcoming "upgrade" to gnome3, I've installed
the latest gentoo snapshot to a new virtualbox machine.  (So I can
trash my virtual gentoo machine instead of my real gentoo machine :)

The virtual install went perfectly AFAICT, except for building a new
customized kernel for the gentoo virtualbox machine.

Here's what I did to configure my new customized gentoo kernel:

I booted the gentoo install iso image in virtualbox and did lspci -k
and wrote down all the drivers it displayed.

I also booted my virtualbox ubuntu machine and did lspci -k and again
wrote down all the listed drivers.  (Only one extra driver showed up
in ubuntu and I included it in my list of drivers to-be-installed.)

I configured my new gentoo custom kernel to use all of the drivers I'd
gathered from the steps above, and compiled and installed it without
any problems.

However, when I reboot the virtual gentoo guest machine with my new
customized kernel, the boot hangs forever after discovering devices
and mounting the root partition.ro.

Obviously I've configured my custom kernel incorrectly, but how?

If any of you have virtualbox guest gentoo machines running with a
custom kernel, would you please post your guest .config file for my
edification?

Many thanks!