Thanks again for all the help.
Not sure if I should start a new thread on this, but here goes...:
I've done the manual updates to the templates and uploaded, but now I keep getting errors as follows (it's a Windows IIS server);
Parse error: parse error, unexpected T_VARIABLE in D:\Web\site\gallery\global.php on line 346
If I overwrite this file with the original global.php file, I then get similar errors, but on other files. So, I have overwritten all the new 1.7.7 files with the original 1.7.6 files and it works again.
Any suggestions as to what I might be doing wrong. I have double checked all the updated pages and I'm sure that I've entered the new code properly.
The only file I didn't update was the install.php, as it wasn't in the site and I assume I would only do this for a new install?
Thanks for any help.