Textboxes within Userform to display info based on combobox selection

Hi everyone,

I have posted similar threads with no luck. Please help me solve this problem.

Attached is a sample of what I am working with. I have a userform that I want to display certain information from within the spreadsheet based on the combobox selection. Then, I want to be able to type new data into those same text boxes where the info is displayed and have that change the cells within the spreadsheet from where the data was originally pulled.

First, how do I get the userform to display data based on the combox selection?

Second, (if it is possible) how can I make that data changeable from within the same userform?

I am just learning VB and have been stuck on this problem for almost a week! Please help!

Thanks!