How do I substitute browsers?

[Ted Quick]

A few days ago I was asking here about how to get a Windows program I want to use registered while
using Kubuntu, since it insists on starting Internet Explorer to connect with the company's server
before it will load the program. 

Among other things I as told to use Opera which Linux accepts as being equivent to IE, but
apparently I need to do something else in addition. Another suggestion was to make whatever
prowser I wish to use be accepted as IE.

How can I get Kubuntu to run a browser as if it was another one?

Ted Quick
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