Oddly, I have "Member Serial Movie 3" which is in 11 parts and they appear to be from 2007. Sadly, there are a lot of older "misplaced" Christina video clips.
Also, I think part of the problem is the confusing naming conventions used on Christina's website. Including the "12 Minute Serial" clips which were numbered 1 through 12, but which have file names like mem2-a.wmv through mem4-b.wmv. I am pretty sure they were on Kitty-Kats, but I cannot seem to locate them at the moment.
There were also from the earlier Christina member site "Member Features Movie" and "Member Candid Movie" and her "Christina Cameo Movie" series.
I know several people have asked about why we don't seem to have all these movies available. Unfortunately, a lot of this stuff is over 10 years old. Finding stuff that's over 10 years old on the Internet is not always easy and Usenet is pretty useless for stuff that old.