Cisco GSR logging issue

i'm working with some folks to try and develop evidence about proxy hijackers on or transiting their networks. i have useful notes about doing this with non-GSR Cisco routers, but right at the moment all i have for the GSRs is a note indicating that netflow is needed. i have no personal experience with the GSRs and am looking for one of two things: 1) someone experienced in capturing this stuff on a GSR or 2) a pointer to a cisco oriented list where i can get 1) above. thanks in advance, richard -- Richard Welty rwelty@averillpark.net Averill Park Networking 518-573-7592 Java, PHP, PostgreSQL, Unix, Linux, IP Network Engineering, Security