433 Mhz Data Receiver

[Pesticida]

Hi people,I have found a 433 Mhz data receiver the chip on the receiver is a Philips UAA3201T like on the photo .
From pin 9 I receive the data,my question is how I must connect this pin to my PIC 16f870 and what command I can use to read the data.
I tryed with serin porta.0,n2400,B0 on porta.0 but I receive a lot of data .
This 433 Mhz receiver have a standalone "Button" transmitter ,I want to display the data from this little transmitter example on my PC.
To interface between my pic and my pc is not a problem,just between PIC and the receiver is a problem for me.
I have on the pin 9 on the receiver 1 volt when i push the "button" transmitter i have on the pin 9 2.5 Volt of data.

Thanks.
bye Pesti.