I'm trying to install a driver for my NMS PCI card. In the Card's installation manual is written that the driver supports only:

Red Hat Enterprise Linux ES, version 3.0 UPD 8
Red Hat Enterprise Linux AS, version 3.0 UPD 8
Red Hat Enterprise Linux ES, version 4.0 UPD 4
Red Hat Enterprise Linux AS, version 4.0 UPD 4

When installing the driver, i got the following errors:
i'm running Ubuntu 6.0.6 LTS, and have RPM4.4.1-5 installed.
Your assistance is appreciated.

Installing package: NMS Communications License Manager for Linux
error: Failed dependencies:
/bin/sh is needed by nmslm-2.22-1.i386
libc.so.6 is needed by nmslm-2.22-1.i386
libc.so.6(GLIBC_2.0) is needed by nmslm-2.22-1.i386
libc.so.6(GLIBC_2.1) is needed by nmslm-2.22-1.i386
libc.so.6(GLIBC_2.1.3) is needed by nmslm-2.22-1.i386
libdl.so.2 is needed by nmslm-2.22-1.i386
libdl.so.2(GLIBC_2.0) is needed by nmslm-2.22-1.i386
libdl.so.2(GLIBC_2.1) is needed by nmslm-2.22-1.i386
libnsl.so.1 is needed by nmslm-2.22-1.i386
libpthread.so.0 is needed by nmslm-2.22-1.i386
libpthread.so.0(GLIBC_2.0) is needed by nmslm-2.22-1.i386
libpthread.so.0(GLIBC_2.1) is needed by nmslm-2.22-1.i386
librt.so.1 is needed by nmslm-2.22-1.i386
libstdc++.so.5 is needed by nmslm-2.22-1.i386
libstdc++.so.5(CXXABI_1.2) is needed by nmslm-2.22-1.i386
libstdc++.so.5(GLIBCPP_3.2) is needed by nmslm-2.22-1.i386
ERROR - Failed installation of package: nmslm
Terminating Natural Access installation

How did you install that RPM? I hope you used alien because Ubuntu does not natively support rpm packages.

As for the missing dependencies, it's obvious you'll need to install libstdc++5 and 6 first; I would need to look a closer look at the rest to find out what else is required.

The bin/sh issues is probably do to the fact that you're trying to install rpm on an apt-get oriented system. It could be solved by installing the rpm package first and creating a symlink to bin but I would seriously recommend using alien first.

Great! Things are getting better.

sudo alien --to-deb *.rpm
sudo alien --to-deb *.rpmsudo rm *.rpm
sudo alien --to-rpm *.deb

Only /bin/sh is my issue now.
This is what i get now when Running install :

Natural Access Installation
Mon Mar 19 23:47:05 CET 2007
Options: (none)
RPM version 4.4.1

Installing package: NMS Communications License Manager for Linux
error: Failed dependencies:
/bin/sh is needed by nmslm-2.22-3.i386
ERROR - Failed installation of package: nmslm
Terminating Natural Access installation

I have tried the following without success:
ln -sv bash /bin/sh
ln: creating symbolic link `/bin/sh' to `bash': File exists

Have you tried

ln -s /usr/bin/rpm /bin/rpm?

This helped me out on one occasion but I forget whether this had to be done before calling alien or after that.