basic transistor switch with input from parallell por( i know it's been discussed) but i need help

Hi im near the point of giving up of trying to learn electronics...
My problem is that i cant switch a relay with my parallell port trough
a transistor.

The design is basic and calculum too..and i wander whats wrong. Please
tell me what am i doing wrong so i can get back on track :D

Transistor 2N2222a :
Vbe = 0.7V
Vce sat = 0.3V
hfe = 10
Icmax = 500mA
Vcemax=100V

Relay:
Rr = 426ohm
Vturn on= 12V

Parallell port:
Vcc= 3.4V

I_bsat= 50e-3 / 10 = 5mA
Rb = (Ve- VbeSat) / I_bsat = (3.40 - 0.3) / 5e-3 = 3.1 / 5e-3 = 620
ohm
+12V
|
relay
|
c
+3.40V -----Rb----b 2n2222a
| e
| |
---- -----
-- --
Please if you think the answer is to obvious bother to reply

.

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