Advice on Linux program please

I'm seeking a program to assist with file management by amending file names in bulk groups. Imagine a folder with all the files labelled claim01.rtf, claim02.rtf, claim03.rtf etc - I seek a program that will enable me to identify the folder or highlight the chosen files and use wildcards to add something to the start or end of the file name such as

eg 1. I enter *y2006.* and files become claim01y2006.rtf, claim02y2006.rtf, etc

eg 2. I enter 2006*.* and the files become 2006claim01.rtf, 2006claim02.rtf, etc

I'm using a Debian based Linux and would like it to work in that. Yeah I know it's possible to write a script to do this, or do it in the command line, but I'd prefer to have something that allows me to do this as in X-windows as a GUI based application - yeah I'm lazy.