Will any graphics card fit my tower?

I want to get this a href="http://www.amazon.com/gp/product/B0011FKI3M/ref=ox_sc_act_title_1?ie=UTF8&m=A2E7NH3SLWCOH4" rel="nofollow"http://www.amazon.com/gp/product/B0011FK…/a but I do not know if it will fit this... a href="http://configure.us.dell.com/dellstore/config.aspx?oc=ddcwca11&c=us&l=en&s=dhs&cs=19&model_id=inspiron-560s" rel="nofollow"http://configure.us.dell.com/dellstore/c…/a will it work?