I am building a website for a client and they wish to add a small shop section (only 20 or so items), this is my first time with eCommerce and I will have to learn as I go along. I have purchased the required software and it seems straight forward enough to integrate it into the website I am building but I just have a quick question if anyone can help.

Are there any special hosting/server requirements I need to ensure I have on my current hosting package before I tell the client I can definatly do this?