How can I manage the BLOB's fields

I'm a little bit confuse about how Interbase and Delphi work's together.

I want to access to a Memo field within a table (In InterBase,
obviously) and be able to modify, insert and delete records, because
when I run my program (Using Query, DataSource and UpdateSQL components)
I have a message like this:

General SQL error
feature is not supported
BLOB and array data type are not supported for compare operation.

What I am doing wrong?

Someone told me that the best is using the IBDataBase component, but I
don't know how to do that.

In others words, anyone can help me?