Payflow Pro compile error

Greetings, It seems that I've gone around and around on this issue starting with PHP3 every time I install a new server. And here I am again. OS: Linux 2.4.21-27.ELsmp #1 SMP Wed Dec 1 21:59:02 EST 2004 i686 i686 i386 GNU/Linux php-5.0.4 library with pfpro listed in /etc/ld.so.conf and I ran ldconfig... ---------------------------------------------- And when I type: ./configure --with-mysql=/usr/local/mysql --with-apxs=/usr/local/apache/bin/apxs --with-curl --enable-mbstring=en --with-pfpro or ./configure --with-mysql=/usr/local/mysql --with-apxs=/usr/local/apache/bin/apxs --with-curl --enable-mbstring=en --with-pfpro=/usr/local/src/verisign/payflowpro/linux/lib or ./configure --with-mysql=/usr/local/mysql --with-apxs=/usr/local/apache/bin/apxs --with-curl --enable-mbstring=en --with-pfpro=/usr/local/lib or anything else I can think of, I get this error message: [.....] checking for Verisign Payflow Pro support... yes checking for pfproInit in -lpfpro... no checking for PNInit in -lpfpro... no configure: error: The pfpro extension requires version 2 or 3 of the SDK And I'm dead. Anyone have similar situation that knows what to do? Is it the Enterprise Linux v.3 Is it the PHP 5? (I have an Enterprise Linux 2 with PHP4 that works just fine!) Thanks Dan