Creloaded 6.2 Small Code Fixes

I require small fixes / changes made to a creloaded 6.2 site I am building for a client. 1. In the category listing page products that have been reduced are not showing the orignal price crossed out 2. The original site was based on oscommerce the client would like the customer details and orders transfered from the original database into creloaded. (Nothing else) 3. When a customer creates an account they would like the option of where did you hear about us drop down box. The options should be added in admin by the client and be able to be changed. 4. The products have options (attributes) however you can order a product without choosing an option. We need this changed so you have to choose an option before you can proceed to adding the product to the shopping cart and the options need to ordered ( The client sells childrens clothes so the options should be ordered in size) I have a budget of $100 for the project payable on completion. Please dont bid on the project if you dont have any feedback. Any questions please ask