About AMD Athlon 4000 dual

Ok i have a amd athlon 64x2 4000 its a dual processor but i have a question, i wanted to upgrade from this but how would i know what processor i can buy (as in whats compatible with my motherboard)

I dont know what kind of motherboard i have and i dont know how i would install a new processor. for example do i have to get another AMD brand processor? and is it easy to install (i've installed processors before but not dual)

it may sound abit confusing about what im asking but long story short i wanna upgrade my processor what kind COULD i get thats compatible

Ok i have a amd athlon 64x2 4000 its a dual processor but i have a question, i wanted to upgrade from this but how would i know what processor i can buy (as in whats compatible with my motherboard)

I dont know what kind of motherboard i have and i dont know how i would install a new processor. for example do i have to get another AMD brand processor? and is it easy to install (i've installed processors before but not dual)

it may sound abit confusing about what im asking but long story short i wanna upgrade my processor what kind COULD i get thats compatible

makoreactors

The first thing you need to determine is your processor's socket. The Athlon X2 4000+ could be a socket 939, or socket AM2. Use Everest to determine your processor socket and motherboard info (like chipset version and possibly model). To upgrade your processor, you will have to find one compatible with your motherboard. It WILL be a AMD processor...hint, hint. Single core, or duel core, or quad core processors all install the same way. If you don't know how to install a processor, READ THIS. Also read any instructions that come with your new proc. ;)

actually it says package type- 940 pin

but then in another part it says platform id -d3h socket AM2