psa directory

[Nesoe]

Hello!

First of all, sorry if my english is a bit 'spanglish' XD

I'm working with a demo version of Plesk 7.5

I have registered a client with a xml request to Plesk.
The client is well registered as it shows me the information I have entered. But when I make a xml request to see this information it returns to me all I have entered except the password.

I need the client's password because I want to check the client identity.

In the psa directory I have only .frm files.
I don't know if I'm right but...I think that account information is stored in psa directory as account.MDY and account.MYI

I don't have these files in my directory.
My question is if I don't have these files because I'm using a demo version or they don't appear in full version neither.

Where is stored the information I add?
I need to access to the password in order to continue my work...

If anybody can help me!!

Thanks!!