QTP Object Repository and scenarios

[Baba]

Hi,
1) I need a code for loading OR (Object repository) at run time.
The code, RepositoriesCollection.Add and RepositoriesCollection.Remove, please confiorm whether this is a valid code.

2) I have large amount of input data, such as Text Boxes, Radio buttons, select buttons with large amount of data. If i am using data table, i have to use again and again in the script. Is there any way you can use at one time?

Thanks and Regards,
Vinod