Dear Sethi !!
Sorry for the delay in replying....
I dont know if K&B book is available on net for free or not but one thing I can tell you is that its an excellent book.Well I have the book in pdf formatwhich i had done for my personal use.
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If you are following Khalid Mughal also no problem.Its also a very good book.Actually it is not about which book you read from rather it is to what depth you grasp the concepts.
Regarding purchasing the simulators..I had not bought any. I always used the free mock exams available on net and i think they were good enough.But if you are willing to spend then may be you should purchase Whizlabs simulator as I have heard very good about it and I also tried the trial version which was free..
I think that should clear all your doubts..But if you still have any doubts please feel free to ask me. You can also mail me at my personal id firstname.lastname@example.org
Wishing you good luck!!
[ February 02, 2006: Message edited by: Bert Bates ]