Is Mushkin 1GB DDR2 memory compatible with AMD Athlon x2 245

[Gyn]

My dad had brought a new CPU with:-
Processor- AMD Athlon x2 245
Mainboard- MSI GF 6100
Memory- Mushkin 1GB DDR2
I'm not really good on PC. I need some help here to find out the 3 things above is it compatible. Because on the very 1st time i used it, the internet explore can't be opened because of the wrong connection settings that i can't change.
But mozila firefox can be open & use.
The main BIG problem is it HANGS a lot & every time i have 2 end the task to resume it. (I only opened 2 tabs in a time & nothing else is loading)

PLS PLS PLS HELP!!!

 

[xaira]

what windows it usin?

is it the latest firefox?

are any conflicting addons installed?

does this happen in any other programs?

 

[sykologic]

are talking about MSI GF615m-p33? If so that is a DDR3 board and it wont work...

OR

the
K9N6PGM2-V

Which is the same but it uses DDR2 and is am2+/am3