how do I interrupt an install?

[dtutty@porchlight.ca]

Hello,

I'm in the process of installing on my new AMD Athlon computer.  I'm on
dialup.  The new computer accesses the net via ethernet to my 486 which
has a modem.

Boot is via USB stick with the businesscard netinst.iso, Etch Beta 3
AMD64.

The ppp connection drops occasionally and I sometimes need the phone.
When I got up this morning, the ppp link had dropped at 0130 but was
back up but the install was just sitting there.  It hadn't
re-established the connection and continue the download ('installing the
base system').  I had to shutdown and start over; it even had to
reformat the partions (LVM on raid1 on 2 disks).

How do I interrupt the installer and get it to continue where it left
off?

Thanks,

Doug.