MAP. extension problem.

[^NecaNinja^]

Sorry tp bother, but I have a problem. Whenever I drag my map file ( a csx. file) to the map2dif, it says  the following: "the map file must have a MAP. extension.

[Ad Bot]

[Monty]

Durrr, maybe if you tried using a .map file, it'd work, it's not called map2dif for nothing.

[super sonic]

i need some one to help me that is a exprt i am a 10 year old so i am not a good builder or installer so i give you    

[infomaniac]

i need some one to help me that is a exprt i am a 10 year old so i am not a good builder or installer so i give you    

Wut

[^NecaNinja^]

Many thanks Monty, I wouldn't have done it without you. <3