Please help recover data - lost pg_control

Hey all - my pg_control file got hosed somehow on a 7.1b3 installation.
All my data files other than pg_control are intact. A search of the net
reveals that the pg_resetxlog utility can be helpful in this situation.
However, my installation does not have the pg_resetxlog utility in the
contrib directory.

So, I grabbed the 7.1.2 sources, built the utility in the contrib
directory, and ran it. It seemed to run fine, but when I start
postmaster now, I get:

[vici:/usr/local/pgsql] postmaster
FATAL 2: Invalid CRC in control file

Next, I built and installed 7.1.2 over my 7.1b3 (I still have the 7.1b3
sources just in case). Now postmaster seems to start fine. But when I
try to do a pg_dumpall, I get:

[root(at)vici:/usr/local/pgsql] pg_dumpall
--
-- pg_dumpall (7.1.2)
--
\connect template1
DELETE FROM pg_shadow WHERE usesysid <> (SELECT datdba FROM
pg_database WHERE datname = 'template0');

ERROR: readDatum: ']' expected, length = 12

DELETE FROM pg_group;

--
-- Database template1
--
\connect template1 postgres
\connect template1 postgres
getDatabase(): SELECT failed. Explanation from backend: 'ERROR:
readDatum: ']' expected, length = 12
'.
pg_dump failed on template1, exiting

When I run 'psql demo' at this point, I can issue commands like 'select
* from person' and it gives me the header with the list of columns, but
no data (0 rows). Attempting to describe a table results in an error
much like the above.

Seems to me the pg_resetxlog utility does not generate a pg_control file
compatible with the 7.1b3 data file format, thus the CRC errors. It
further appears that 7.1.2 is expecting a different format as well.

I know all the data is there - it must be possible to extract it
/somehow/.

I would be _extremely_ grateful for any assistance.

Thanks in advance.

Alok