This helps because, the researchers send the information or cell structures to your computer, your computer then works out (maps the cell or whatever) See the page links i posted below
Much like the human GEnome Project was like (That was where they found out what every chromosone in each cell was for)
This project was completed in 2003 (i believe) now they have started teh Human Proteome folding project which will tell those scientists people what each protein does
well learn about it here
http://www.grid.org/projects/hpf/
the cancer project page is here
http://www.grid.org/projects/cancer/
Either way its going to a good cause, if it only cures one person. Its been a sucess.