Comparing two SQLServer databases

Hi, does anybody know a nice tool to automatically compare and show
only the structural differences between two databases, this is, the
differences in the columns of a table, constrains, data type, etc.

Thanks

J.A.I use this one (there are a number of other, simipar products):

http://www.red-gate.com/SQL_Compare.htm

Simon|||For excellent compare functionality (including data) plus the ability
to link your source control system into the whole process I recommend
looking at DB Ghost (www.dbghost.com). It also guarantees any delta
script produced will work (due to a unique algorithm), something no
other tool can promise.