needn't check available space

hi people!
when not enough disk space, installer makes "next" btn disabled. How can I disable available disk space checking?
Hlp.

ouch! people i solved this problem. I think, that my exp will be useful for others!!! First check components, that u want to install, THEN select path to install(this part checks available disk space). Punks Not Dead! Õîé
ñïåøèàë ñåíêñ òó Yurik, ñïàñèáî ÷óâàê