Date index for Nov 2003

Hi
I have a request that you may be able to help me with, we have  been using
achievo to record time spent on projects and as I havejust started working
for them they gave me the task of upgrading to the latest version. So please
forgive my ignorance if i get the terminology wrong.

The feature that they have requested is in the time registration form.

Normally in the remark they log the time that the work was carried out ,
then match it up to the hours done on the project.
Is it possible to have 2 new text boxes with start time, and finish time
either recorded as seperate entries in the database or just concanotated (
hope thats the right word ) into the remark field ie 09.00-13.15.
I am not a php developer so dont really have an idea where to start with
this.

Hope you can help
Thanks
Nigel