Hi lokis065.
Did you mean Celereon E3200 or E3300.
If you mean this two processors I think they will work correctly.
What I found out, that you must look at following things for the 775-Dual-VSTA:
The processor have R0-Stepping
The processer have max 1066 MHz Bus Speed (FSB).
I\'ve installed yesterday my new processer. A Pentium Dual Core E6500 (new one) with 2.93MHz frequency, R0-Stepping and an FSP of 1066MHz.
I think more frequency than 2.93MHz will work (for exapmle when you plan to update to an Core2Duo - E7600).
If you are not sure, the processor you would like to install have above requierments check the Intel CPU Spec Site:
http://processorfinder.intel.com/
Greetz...kingpin