P.I.P.S distribution with application

I have a simple game that depends from P.I.P.S
What is the best way to distribute my game, with embeded PIPS sis file or separately?

1. The problem at the moment is when PIPS is embeded like this

IF NOT package(0x20009A80)
@"pips_s60_wp.sis", (0x20009A80)
ENDIF

the game installs and runs just fine the first time.
If I try to install the same game and override the existing one,
it first removes the old installation including the PIPS and then doesn't install PIPS with the new installation. Then my game doesn't run because of the missing PIPS.

2. When the IF statement is removed, i.e. PIPS will be always installed, the error "Unable to Install" will rise when another version of PIPS was installed before my embed version of PIPS.

Please, advice?

Thanks in advance!