Need a webform alternative - without using InfoPath

We would like users on our intranet to be able to submit a very simple 2 field form (a month and a value - for expenses).

We don't have InfoPath.

I've tried using a List - but this makes all info available to all users and ends up as 1 big list.

e.g. like this:

Jan - 10.00
Feb - 00.25
Jan - 00.30
Feb - 01.25
Feb - 02.20
Feb - 03.10

Maybe if we could hide the last few entries it wouldn't be so bad.
Or is there another way in which we could gather this data from users?

thanks in advance.