Installshield express 2 common file over write each other

[Sydney]

Hello:

There is 2 file share same name lower version and higher version. I
dont want them overwrite each other in same directory. I have tried
change propath but after install dont show it in desktop "start-->
program", but I do see it in added remove program function. Could
someone please tell me how to fix the new package.

Thanks,

LC