>- Every COM objects i create, i should have them on another project (makes sense...)?
Sometimes COMs can be used to allow non-VFP software (like VB or Excel)update a DBF (xBase). A VB routine, instancing a VFP COM can seek a VFP TAG key.

>- It's difficult the process of installing the application and components on our final customers?
The DLLs seem to work out of the app directory.

>- I can have DLL's without Microsoft Transaction Server, isn't it? If so, i can have connections problems, because each component creates one; and, if i have a transaction i can use 5 or 6 components at a time. Must i have to use Message Queuing?
I suspect you can define several classes in one DLL, and instanciate them seperately!

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>Thanks