ListView icons

hi there.

I have a listview which displays a list of files, like a listbox.

this first time when the files are listed, it lists it fine, one underneath the other one. but then when we go back to this folder, it shows the files but doesnt show them one underneath the other, it shows one next to each other then continuing on the next line

how can i make it like a listbox where items added are on top of each other?

thanks!

Do you mean it's changing from details to large icon view or something?