I need to know exact model of Fabrice Santoro's racquet and strings
chosen at what tension. Reasonable price paid, of course...

When you say exact model and tension, I assume you're referring to the
equipment he was using during his recent appearance at the 2005 US
Open.  While I could not locate any data for his equipment for that
particular match, I was able to gather some information about the
equipment he's been using in recent matches leading up to that
appearance.  And as his various equipment logs will show, there are
some consistencies to the equipment preferences he's been using over
the last couple of years, so it can be reasonably assumed much of the
information is current.

Back in march he was using this equipment at the 
2005 Pacific Life Open 2005

Racquet: Head i.Radical
String: Luxilon/Babolat Big Banger Ace/VS gut 1.3
Tension 23/22 Kilograms

2004 Nasdaq 2004

Racquet: Head i.Radical
String:Technifibre Original 1.35
Tension 23/22 kilograms


2004 Pacific Life Open 2004

Racquet: Head
String: Tecnifibre 1.4
Tension: 24/23 Kilograms 

2003 Pacific Life Open 2003

Racquet: Head i.radical
String :Tecnifibre TGV
Tension 23/22 Kilograms

Here's a quick reference to convert kilograms to pounds for you

Kilograms      Pounds
22             48.5
23             50.7
24             52.9

I gathered all of this information from a Dutch website

Linked here:

http://www.bigbanger.dk/index2.php

Their information reportedly comes from 

The United States Racket Stringers Association

http://www.usrsa.com/

An association who maintains equipment logs for all the major tennis
matches.  Unfortunately, this information is only available to
subscribers (1 month/$9)

I hope this helps you

-johnny_moniker

(Total search and answer time 45 minutes)

Great info, I wish you were a researcher who could collect the $15.
Thanks for your time and effort Johnny , let me know if I can tip you
somehow. Phil