Help with OSCOMMERCE

I operate a site, www.icharms.biz. I need three things: 1. I need to get my search engine to work properly or install one that will work. 2. I neet to change the layout of the OSCOMMERCE product page to allow for better viewing of the products (rather than one product per line, I desire 4 products per line with the buy buttons and product information underneath). 3. I need help getting the contents of this site set-up under a new domain. Right now, I am using [login to view URL] and have it aliased to icharms.biz. However, when someone views the catalog and a product, the [login to view URL] comes up. I want to use my new domain name. Technical support is desiring that I fix this myself, which is horrible. I simply cannot risk losing my data (hundreds of hours logged so far). Open to suggestions and bids.