Mine did the same thing when I bought it. There is a spring on the clutch pedal that I sprayed with some motorcycle chain wax and the squeek has not returned since.
-David
__________________ 1996 993TT - current
2001 Boxster S (sold) 19" SSR GT3 - Cross coilovers - Custom Magnaflow exhaust - B&M Short Shifter - EVO intake - GT3 Seats - Hardtop