EXS 24 Logic Sampler Users Group

Hi. I've spent the last hour checking for an existing answer to my problem. I found some 
answers, but when I tried to use them it didn't work.

I have a G5 and Logic Pro 6.4.1
On 1st September the computer wouldn't turn on anymore. It seemed to be a problem of 
the operating system. So I bought an external hard-drive, copied all the datas there, 
bought Tiger and installed it from scratch. 

After that I simply moved the Logic application Icon from the external hard drive to the 
main Mac HD. I had previously backed-up the Logic preferences Folder so now I copied it 
again in MacintoshHD/Library/Preferences.

When I open Logic, and open the EXS24, there are just no instruments to upload!

So this morning, after reading many posts, I tried to make an alias of the Sampler 
Instruments Folder and put it in 

MacHD/Library/Application Support/Logic

But it still doesn't work.

I also tried to put it in the MacHD/User (Me)/Library/Application Support/Logic

but...nothing.

I need to point out that no Logic folder existed in the Application Support Folder, I just 
created it (maybe this is because I didn't install Logic from scratch on the new Tiger 
system?).

So, thank you for any help, and hope I didn't ask too stupid questions :-)

Paolo