The very first Tropico? Wow. Are you trying to install to a 64-bit OS? Are you installing from CD? (I'm wondering if the copy protection requires 32-bit.)
P.S. You can buy Tropico 3 on Steam right for $2.49 or the first three games for just $5. I think you might be better off just buying that instead of burning hours of game time. Assuming, of course, that it isn't the Steam version you're talking about.
...the Law [of Fives] is: All phenomena are directly or indirectly related to the number five, and this relationship can always be demonstrated, given enough ingenuity on the part of the demonstrator.
--- Hagbard Celine in the Illuminati series