Getting started on a cart

i have a client who wants an shopping cart site and wants to use lunarpages.com for hosting (supports php, mysql, asp, perl, and cgi-bin). lunarpages offers agora and interchange shopping carts, but they don’t look easy to to design with.

i don’t expect to make a cart, so what kind of canned cart should i use? if anyone has any specific cart software in mind, feel free to suggest it.

i’ve read through countless posts on the topic, but i’m just a little confused about what would best meet my specific needs.

thanks