Laptop dual monitors

Hello,
I am thinking of buying a new laptop with an ATI mobility Radeon 5470 graphics card. The spec sheet says this card can be used for dual monitors. I have 2 X Samsung Syncmaster monitors (21.5") which are currently run on a desktop with 2 ouptputs. I mainly do spreadsheet and word applications. I do not do any gaming.
Being a newbie, my questions are:
1) Because the mobility card only has 1 output, I assume some sort of splitter is required, what is recommended so I can run separate applications at the same time
2) Is this graphics card overkill for what seems to be simple application use and no gaming

Thanks in advance.