Joel,
Although Access provides a way to retrieve a numeric record position it
should never be used to retrieve a record as it's not permanent (it is
documented somewhere in your manual).
Providing the code runs in the form's class module you could write it like
this (there is a shorte way using only bookmarks but this is the safest -
for instance in a multiuser environment):

***********************************
dim varPrimaryKey as variant, rs as recordset, strBookmark as string
varPrimaryKey = me!MyPrimaryKeyName
 ***
(other code to take you off that record)
 ***
set rs = me.recordsetclone
rs.findfirst "[MyPrimaryKeyName]=" & str(varPrimaryKey)
if rs.nomatch then
    msgbox "Previous record deleted .... cannot return to it!"
    .....
else
    me.boorkmark = rs.bookmark
endif
rs.close
************************************
I assumed your Primary key is a numeric one and is named MyPrimaryKeyName.

You could also dim varPrimarykey to the same variable type of your actual
primary key it run faster then using a variant.

if yourprimary key is a string then the find changes to:
rs.findfirst "[MyPrimaryKeyName]='" & varPrimaryKey & "'"

Please note if you are running it with Access 2000 you should change the dim
statement in:  dim ....., rs as DAO.recordset, ......

rgds
Andr