Views: Link Title using Text URL field (GUID)
Assuming that you know the link and can construct it from the GUID field (either by some/text/[guid_field_machine_name]/maybe/more/text or just [guid_field_machine_name] or what have you):


Using the dropdown arrow to the right of the Fields section of your view, select "Rearrange"
Move the GUID field above your title field and save
Make sure your title field no longer has the link box checked off, because we're going to use a different link box.
Click on the title field to pull up the settings where you unchecked the link box. This time, select the Rewrite options.
Select the link option under the rewrite options. This will show you a text box where you can use fields that appear above the title field in your rearranged list of fields in a link to add to the title field. In this box you should put your GUID url, using [guid_field_machine_name] for the GUID field.


If you have questions, let me know, I can definitely provide more specific directions with a bit more information from you, like what exactly the GUID field contains and stuff.