make sure the recordset is set to filter the ItemCatID column on the ItemCatID URL parameter.
Once the record set is created, you just need to add the display to the results page.
Add a table with one row, and two columns (you can choose to add more columns if you wish to display more than name and price).
from the bindings panel, select the Item Name binding from the recordset and add it to the first cell of the table, add the item price to the second cell of the table.
Now in the tag selector, select the <tr> tag then in the server behaviors panel click the plus button and select Repeat Region, set it use all records.