Hey,
I have passed IBM Websphere Sys Admin 340 exam with 74.14% today

. Thx to all who have posted great info on this site. I must say this is the best site for all Java Developers.
Here is how i have done my preparation.
Read two pdf's
1. System Management
2. Security
3. Read some part of Scalability and Performance
( Abt Tivoli Perf viewer specially)
4. Read abt fixpack and efixes installation
Thx,
Steve