dblink_connect(text,text) on PostgreSQL 7.3.x

 Hello,

I´m don´t if I´m sendind the question to the right list, but here it is.

I want to know if I can use the following function on PostgreSQL 7.3.x.:

dblink_connect(text,text)
dblink_disconnect(text)

I´m tried to use it on PostgreSQL 7.3.4 and it´s works well after I create manually the function listed above, but on PostgreSQL 7.3.1 didn´t work. Then I verify and I think that the problem is the version of dblink that I´m using, well I just don´t know how to solve this problem. Does anyone know what I need to do to use this function on PostgreSQL 7.3.x?

Thanks,

Wilton Ruffato Wonrath