The software that I have found myself supporting, from time to time fails to run on different PC's. Generally they are new Win7 installs.

The error message is "this application failed to start because rtl90.bpl was not found..."

To rectify the problem I have out PC Support copy the rtl90.bpl file to the users system32 directory, however i would like to ensure this error no longer occurs.

I have googled and found the followling link [rtl90.bpl problem](http://www.delphipages.com/forum/showthread.php?t=154469) 

My question is this: 
The option to "Build with runtime packages" is already selected under the Project options for this program, and does not appear to make any difference to the users getting the problem.

Do I have to specifically Add the missing rtl90.bpl file to the project?

Please note that I know very little about delphi programming.