Help - Adding dll thru code [Add dll in running time]

How do I add a dll in running time?

Donno, if its possible but I was thinking something like

Code:

Imports "c:\checkdll.txt"

and checkdll.txt would have something like

Code:

c:\mainfun.dll

The link to the text file, is to make it easier to change the location.

Any help would be great, thanks