How do I get the guids of taxonomy/metadata terms for updating lists?

I'm integrating a legacy system with SP2010 using a literal SOAP calls. I can do a call such as CopyIntoItems or UpdateListItems and doing so, set metadata fields by providing a Fields node such as:

  <Fields>
       <FieldInformation Type="Note" DisplayName="Country_0"
                         Id="de1e6424-7a8a-42a5-8d21-73402fe2e609"
                         Value="UK|91c89925-16e6-4d41-9e71-ec45e8f2a113" />
       ...
  </Fields>

In the Value attribute, I have to give 开发者_StackOverflowthe guid of the taxonomy or metadata term. That works fine in the above example since I happen to know the guid of the term UK. However, how can I dynamically figure out what the guid of some other value, say France for example, would be? I was thinking of making a utility to get them all and cache them on my system somehow so I can look them up easily, but where are they defined?

Possibly a stupid question, I get the feeling I've missed something...

The GetList call should allow you to get all the ID's.

But the UpdateListItems (and) call should work using just the internal names.

From the MSDN Sharepoint 2010 forum:

http://social.msdn.microsoft.com/Forums/eu/sharepoint2010general/thread/63553372-b87f-4d69-8d4c-63fb8a7b3c6d

Not sure if this is the best way but it's the answer I'm going with for the time being.