Access - Username and Chronoloigal Queries

Hey,

I am creating a database to store part information and pricing history and I have two issues that I cannot seem to solve.

First, I have an import form to import pricing information on a list of parts from Excel into a table in Access. I would like to append the windows user name onto each line of data to mark the person that uploaded that information. I already have code to pull the windows user name, but I cannot figure out how to put it into the table when someone is importing information.

Second, I would like to create a query to pull back information on a part number. My issue is that I cannot figure out how to pull back complete lines from multiple different tables in order to display them chronologically. For example, a part may be entered into the Original Pricing table on 1/1/13, and a discount on that part may be entered on 3/1/13. I want to be able to search for a part number and have it pull back the line that includes the original pricing and a line that includes the discounted pricing. Perhaps this might require creating a new table that combines all tables in order to accomplish this, but I'd like to know if there's an easier way.

Thank you for your help!
Amandacolle