Trim pathname HELP PLEASE

Question

Hi all, I'm a newbie so please forgive me if i mess this up :-)
 I am working on a new vb app in vb 2008 that works of a database. What i want to do is store a short image path to the database field (the picture is displayed on a vb form.)
 Anyway, i can get the full path of the picture but i want to crop it to just everything AFTER the appication.startuppath, IE:

 I get image path as:     C:\Users\me\Documents\Visual Studio 2008\Projects\mydbapp\picture\local\image1.jpg
I then store this in a textbox, now i want to retrieve everything EXCEPT the application path which in this case is 'C:\Users\me\Documents\Visual Studio 2008\Projects\mydbapp'   so i just get
 'picture\local\image1.jpg'
 The application path will change once it is rolled out hence i just store the short image path in the db and manually add application.startuppath in code so as it will always work (in theory!!)
PLEASE HELP ME ASAP, i have googled all day and not been able to solve it.

 Many thanks in anticipation of your answer