trying to open a URL script with os x

[sonrise]

We switched form os 9 to os x and we have a script that enables us to view a pdf file that is named according to the record number

this is how it reads

set field {"GBL Resume URL", ""http://ip address/"&Right(applicantID, !) &"/"& Applicant ID".pdf""]

Open URL [No Dialog, "GBL Resume URL"]

if the file holding the pdf's is on the os 9 system and designated as the web shared folder it opens fines

but If I put the file into the public folder of the Os x computer and change the script from http: to afp: it can't open it.

what am I doing wrong.

the goal is to get rid of this iMac that has os 9 on it and just host the resumes on our G4

any help is welcome

Dawn