Macro To Enter Data By Clicking A Button?

I have two buttons in my excel ("Fund Set up" & "Broker Set up") sheet1. so what i need is when i click the button named as "Fund set up" a input box should appear as "Enter the volume" and the user has to input the volume..For ex, user has entered the volume as 2. After that a line of data should be populated automatically from col A2 to col E2 as below.

Similarly if i click the "Broker set up" button the same action should happen but the activity should be populated as "Broker set up".

S.No Date Activity No.of Req Type of Action
1 21/01/2014 Fund set up 2 Input
2 21/01/2014 Broker set up 4 Input

So whenever i click any of this two buttons a input box should appear to get the volume and once the volume is entered by the user an entry should be populated as above in a new line.