help theming album list

ive got a custom gallery, but im having problems setting the album cover sizes. Ive attached two pictures, the first shows how my gallery currently looks, and the second how I want it to look.

Basically I have a page which lists all albums, with a thumbnail of one of the photos in the album. But the thumbnail stays as the uploaded size.

How can I make the photo smaller?

My site isnt online yet so cant give links. But ill give as much css as i can

#photo-album-wrapper, .shoto-album-wrapper [
background-color:#F7F7F7;
border:1px solid #BBBBBB;
display:block;
min-height:350px;
padding:10px;
}
#sphoto-album-wrapper {
margin-top:3px;
}
(The grey box behind all the albums)

.photo-albums {
background-color:white;
border:1px solid #CCCCCC;
margin-top:5px;
padding:9px;
}
(the white box behind each individual album)

.album-data {
color:gray;
font-weight:normal;
}
(the text on the right)

all the above is from the ablums module.css

the only css that the photo is inheriting is

img {
border:0 none;
}

taken from modules/system/defaults.css?Z