So you know:
Most of the engineers on this Forum are more familiar with the Cisco IDS product line IDS-4210, IDS-4230, and WS-x6381-IDS.
You might get lucky and have someone familiar with Pix details also following this Forum, but if you don't get any answers here then I suggest you try this question on the FireWall Forum.
You mught have better luck contacting the Pix engineers on the FireWall Forum.