TextFrame and VBA

I have 150+ presentations, each with three hypertext links in a
TextFrame object. I need to modify each of these links. I have a
couple of VBA wonderings.

First, with MS Word I have the normal.dot file and with MS Excel I
have the personal.xls file. Both hold macros or VBA code that can be
executed against any document or spreadsheet. Thus far and as near as
I can tell, PowerPoint doesn't have a counterpart generic template
that will retain macros that may be executed against any presentation.
Is this true?

Second, I've had no problem in the past writing macros that open every
document or spreadsheet, in turn, in a folder. Once open, I can make
changes, save the changes and close and open the next asset.
PowerPoint seems to be so freeform that even if I had a generic
template, there doesn't seem to be any way that I can select a single
TextFrame on the last slide, change the three links and then save and
close the presentation before doing the next in the folder. Have any
of you done anything like this? My testing shows that each TextFrame
has a different object number. Is this true? Have any of you
selected each TextFrame object in a presentation and tested it's
contents for a particular value?

Thank you for your time.

Best Regards,
Jeff Jones