want to restore older version of Wheezy

[Steve Kleene <skdeb@syrano.acb.uc.edu>]

As noted in another thread ("Wheezy upgrade trashes display"), upgrades on
Monday left me with no X-windows.  I suspect this happened when the kernel
was upgraded from 2.6.32-5-686 to 2.6.38-2-686.  I still have the netinst CD
that I originally used.  It predates the kernel upgrade, and the CD has
linux-image-2.6.32-5-686.

I'm thinking that I may need to reinstall the whole system.  If I use the old
netinst CD, will it automatically proceed to upgrading the kernel, or will it
stop with 2.6.32 (which was a successful system)?

Thanks.