How can i filter Record?

Hey guys does anyone could help about this problem?it seems its a minor problem for some experts but i was only new for crystal reports..

I used crystal report xi r2 developer ed. my problem is how can i filter records if if i wnt to display a field(ID NAME AGE ADDRESS) in my database in my combox there is a record of address which is if i choose a certain address i will filter only records those simillar of what i choosen an print it on a crystal report???

could anybody or anyone can hep me........plssssss
its urgent.......

thanx
and more power.....