The following code:
jmp dword ptr 
in the debugger it's written this way:
jmp dword ptr ds:[<&user32.MessageBoxA>]
I want to know what they both mean, I only know jmp is an unconditional jump. Also I seek information on these registers that I can't seem to understand:
CS - code seg.
DS - data seg.
SS - ??
Please, detailed explanations/links. Thanks a lot gentlemen