WordPress stops displaying images when IP address changes

Hi

I have installed WordPress on XAMPP on a Windows 7 Home Premium 64-bit. I installed it while it was accesible under a certain IP. A few months later, the network I was hosting it on (a home network) randomly changed IP, and now the WordPress site (probably all versions would do this) was configured to look for images and backgrounds on the original IP address, and couldn’t find them, so just basically stopped displaying all images and backgrounds and graphics and styles etc. Is there a way to, somehow, in the installation, tell it to look only for images etc. on the address 127.0.0.1, which will always refer to my computer?

Thank you very much for your time.

Ian