Preben,

The Pi is our familar constant.  H = PE + KE is the Hamiltonian, and I am trying to find a classical molecular partition function.  Unfortunately, no bounds are given in the problem, and so it must be solved indefinitely. 

I may try and break up the integration in MAPLE, or do it by hand.

Thanks for the continued help

@Preben Alsholm 

Yes, a similar form.  I've uploaded the file.  My browser was being finicky about copy/paste.

I am trying to accomplish the same thing as Preben has written above.  I currently have it done using the "expressions" tools, but I've written it out using the "int" commands as well.

Thanks for the help so far everyone!