Hello BarbJack,
Thank-you for your question.
Basically you are using the ZPX (Zap-Fix) based testing scripts with LR (Load-Runner) the same way you use any other QTP based scripts:
This is because ZPX is an Add-in to QTP, and ZPX based scripts are eventually QTP based scripts.
P.S. Zap published the ‘ZAPGEN’ application which behaves just as the LR:
It allows you to execute any QTP and ZPX based scripts as load test (Performance testing) on any platform (Including all mobile devices) and on any cross-platform Browsers and Devices.
Please check our latest ‘ZAPGEN’ page at:
http://www.zaptechnologies.com/products/zapgen
For more help please contact Zap.
Thanks,
Sasha