getting 32-bit libraries for Ubuntu

I have a couple of 3rd party apps that I'd like to run under Ubuntu or
Debian.
The problem is, that they are distributed in 32-bit.
They die at trying to load a 32-bit verison of libc6.so.

Is there a convenient way to get some of these 32-bit libs on my system?
Something short of installing another entire chroot'ed 32-bit system
to mount?

One app is icc, no work around (propriatary commercial software).
The other is tk/tcl, but it launches from a 32-bit elf executable.
I dunno what is going on there.
I have the source.  I wonder if I can just re-build that ELF32 wrapper
as ELF64 and be OK on that one.

               aaron
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