
Hyp2000_mgr has been compiled with g77 on Linux, not f77.

The binary distribution has been linked accordingly and requires
shared library libg2c.so. If you get a complaint that isn't there
or you're trying to compile hyp2000 yourself and you get errors,
you may need to install g77.

For Ubuntu 9.10, I needed to do the following as root:

edit /etc/apt/sources.list and append the following lines to the end:

deb http://hu.archive.ubuntu.com/ubuntu/ hardy universe
deb-src http://hu.archive.ubuntu.com/ubuntu/ hardy universe
deb http://hu.archive.ubuntu.com/ubuntu/ hardy-updates universe
deb-src http://hu.archive.ubuntu.com/ubuntu/ hardy-updates universe

Next:

aptitude update
aptitude isntall g77

Now the binary hyp2000_mgr works properly.

It's suggested that you go back and remove the 4 lines you added to 
sources.list since they're for the older 8.04 version of Ubuntu.

(The above adapted from:
http://0x5f.blogspot.com/2009/10/install-g77-in-ubuntu-904-jaunty.html
)