I have a very minimal install of Ubuntu 8.04 64-bit.
When I try to run some 32-bit programs, such as my jhead program, I get the message No such file
jhead
No such file
You will need to install the 32bit library package
ia32-libs - ia32 shared libraries for use on amd64 and ia64 systems
go and execute
sudo aptitude install ia32-libs