bit operations

I'm new to PostgreSQL, and I'm trying to migrate a MySQL-implementation to this instead... It's really different from MySQL, and the docs are not as good, and the IRC-channel (on EFNet at least) is really really inactive. But still. :-) Maybe the mailinglist is more impressive...

Have a little problem with bit operaitions that I cannot find the answer to on the Internet. Have been searching through the archives but no result.

In MySQL you can have a INT column and do bit logic ala C-style like this:
"select * from table where flags & 4;"

Can I do something similar with std SQL? I've been trying to cast everything to BIT but without success, and I've also been creating a "flags bit(4)", setting a row to "1000" (8) and trying to compare, but I have absolutely no idea how to.

Say I wanna check if 8 (1xxx) and 2 (xx1x) is set, how do I do that?!

Please help me! :-)

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Johan Björk