export and import advise

hi Gurus,
One of myclients wants a import file (version 7.3.4) but our database is ver 8.1.7 . I know that for doing this I have to run expcat7.sql file against 8.1.7 database
and run exp/imp utility on client database agianst our database .... using sql*net .
But the problem here is ....the client is no way connected to our database. earlier before we upgrade both databases are at same level so there was no problems.
has any one got other ideas.

rgs
> narender.akula
>
>

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