Where are needed files?

[Robert Krueger]

Hello,
  As part of the CodeForge Package, they use the DDD Debugger.   I am
using RH 6.1.   I downloaded and tried to install the DDD rpm, but ended
up with these messages:

ld.so.1 is needed by ddd-3.2-4
libXm.so.2  is needed by ddd-3.2-4
libstdc++-libc6.1-2.so.3  is needed by ddd-3.2-4

I cannot find these files anywhere.  Can you tell me where these can be
found?

Thankyou,
Robert Krueger