The suggestion looks more feasible the more I re-read it.
Pasted some of the procedures here to save you some mouse-clicks. :D
Disable hyperlink warnings for 2007 Office programs
To disable the hyperlink warnings in 2007 Office Programs when an http:// address, notes:// or an ftp:// address is used, you must create a new registry subkey. To do this, follow these steps:
1. Click Start, and then click Run.
2. In the Open dialog box, type regedit, and then click OK.
3. In Registry Editor, locate one of the following registry subkeys:
* HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Common
* HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Common
NoteYou only have to modify one of these registry subkeys. You do not have to modify both of them.
Note If the Security subkey already exists, skip to Step 6 after selecting the Security subkey.
4. Click the registry subkey, point to New on the Edit menu, and then click Key.
5. Type Security, and then press ENTER to name the key.
6. On the Edit menu, point to New, and then click DWORD Value.
7. Type DisableHyperlinkWarning, and then press ENTER to name the entry.
8. In the right pane, right-click DisableHyperlinkWarning, and then click Modify.
9. In the Edit DWORD Value dialog box, click Decimal, and then type 1 under Value data.
Note A value of 0 enables the hyperlink warning message. A value of 1 disables the hyperlink warning message.
10. Click OK.
11. Exit Registry Editor.