Click on the apple in the upper left hand corner, then 'about this mac' then 'more info'
Give us that info. Omit the serial number.
For example, here is mine.
Model Name: MacBook
Model Identifier: MacBook3,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 1 GB
Bus Speed: 800 MHz
Boot ROM Version: MB31.008D.B00
SMC Version: 1.24f2
Serial Number:
Sudden Motion Sensor:
State: Enabled
I bought mine on 12/27/07 new from an apple store. Mine is a SR macbook.
If you bought new, from apple or an authorized retailer, around the time you said, it should be an SR macbook.