[K12OSN] help with a server please

[Alejandro Mel]

Hello
First of all nice to meet you
Iam from Argentina and have to set a server for a internet cafe. The 
customers are going to use Staroffice, abiword, Firefox, sometimes MP3 
playback and rarely wath some divx video.

So I considered the possibility of building the internet cafe with LTSP 
which I realized that it has lots of advantages and I will save a big amount 
of money.

I bought very cheap  second hand 20 compaq deskpro 233Mhx mmx 32MB Floppy 
and 2mb S3 video card and 3COM 100Mbit netcard

Regarding the network, I am thinking of buying a 24 port switch with one/two 
1GBIT port for the server

The only thing I can t decide is the SERVER because Iam a little confused.
Iam going to tell you what I have in mind..... tell me wrong things, changes 
, etc...etc etc

( you should take into account I LIVE IN ARGENTINA, SO THE HARDWARE HERE IS 
VERY EXPENSIVE AND SOMETIMES NEW HARDWARE IS DIFFICULT FOR ME TO GET IT)

AMD SEMPRON 3000+
1GB KINGSTON/CORSAIR DUAL cas 2.5
WESTERN DIGITAL 76 GB RAPTOR 10K
A POWERFULL POWER SUPPLY 500W TOPOWER
UPS FOR MORE STABILITY

what do you think about RAID 0 with two raptor wd??? ECC CAS2 MEMORY is 
wasting money???

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