Using PostgreSQL 32bit dlls in 64-bit code?

Hi,

We are considering to use postgreSQL for our 64-bit code development
for Windows XP 64 bit machine.

As 64-bit postgreSQL is not available for Windows, we can only use
postgreSQL's 32bit dlls.  In that case, can we just call postgreSQL's
functions in our 64-bit code?   Or do we need to write a wrapper
around postgreSQL's 32bit dlls somehow?

Any pointer will be much appreciated.  Thanks.

Stephen