PostgreSQL 32 bit DB on 64 bit machine

Can a 32 bit PostgreSQL v. 9.0 db be copied from a 32 bit machine and overwrite the db on a 64 bit PostgreSQL machine?
I'mtrying to get a good initial starting point before performing hot standy write ahead logging (WAL) replication
betweena 32 bit and 64 bit machine.  When I copy the 32 bit db to the 64 bit db, the PostgreSQL logs are saying the
pg_controlfile has a checksum mis-match.  When I backup and restore the 64 bit pg_control then the log files report a
sysid mismatch. 

Thank you,
Brian Martin