Can we Automate COM Objects with QTP which doesn't have UI?

Can anyone please let me know if we can automate COM Objects(Functionality is: It does bond calculations so when we input data it has to calculate the price and has to compare the Actual with expected(the process has to repeat for thousands of bonds). There is no UI....
Is it possible to automate, if so how hard can it be for someone who had basic scripting skill?