How to run a 64 bit application on a 32 bit system?

Question

Windows

How can I do this without changing Windows?
Advise the application (not a hack-tool), or if there is none, what should be done with the code?

Answer 1

Find the 32-bit version of the same application.

Answer 2

Don't run at all.

what should be done with the code?

Rewrite.

Answer 3

The message is not entirely clear.
How to run or what to do with the code.
We take Delphi xe
We write the same for both 32 and 64
For windows, this is a very powerful solution.
There are no special differences.
Well, except for
Integer
Int64 types