I need some help with ASIO... and not only that

I want to say that I am new to making music.
I read topics in internet forums/fora and as a result of my reading and analyzing I bought Behringer UMX61.
Together with the controller I got this ASIO driver:

http://www.asio2ks.de/details.shtml

I have read that ASIO4ALL is the way to go.
As I am really new to this I have 2 questions:
First are they one and the same thing or one should choose depending on their soundcard?
Second in the latency settings of ASIO2KS I have some option "Number of blocks".
How different numbers of blocks affect the performance when the latency is the same amount of milliseconds?
Thank you!

I have no experience with ASIO2KS. Yet, looking at the webpage, I see that it is labeled as beta, and hasn't got any new versions since 2003.

Constrast that to ASIO4ALL that has even been tested to work in Windows 7.

Internally, they use the same concept (using kernel streaming and bypassing the windows audio stack).

About the number of blocks in asio4ks, i can only guess that it represents the internal buffer blocks (i.e. how finegrained is the whole buffer).
Ideally, one would want this to be just 2, but higher values can help to get less CPU spikes.

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<[JAZ]> Pa pi pa pa pa pi pa.... ;·D

Thank you!
ASIO2KS is not a freeware.
Some people with Windows XP that had problems with ASIO4ALL reported a certain improvement with ASIO2KS, this is the only thing I found in the net about it.