Problem with rules

I am having a problem with the rule system in 7.3.4.

I have a view with an on insert do instead rule that is calling a
function and passing new.*. When try to insert a row into the view, I
get ERROR: ResolveNew: can't handle whole-tuple reference.

I was working with this in 8.0 on an R&D project. However, management
liked the concept I was working on so much, they asked me to try and
see if I can get it to run in our current environment of 7.3.4.

So far, this does not look good. Any way to get around this issue
(and no, a db upgrade at the time is not available. But one is
scheduled in the next 6 months).

Thanks,

Chris