newbie - Sharepoint integrated with Dynamics AX 2009.

Hello,

I need basic guidlines to change programmly the sharepoint side of Dynamics AX 2009.

What feature I shall install for Visual Studio in order to get the objects from dynamics and do some  manipulations.

B.T.W - I have a problem:

for PurchReqAddItem web control, i.e, I have the following code:

DataSetViewRow row;

row = PurchReqCatalogItemsDS.GetDataSet().DataSetViews["PurchReqLine"].GetCurrent();

row.BeginEdit();

row.SetFieldValue("CurrencyCode", "EUR"); 

row.EndEdit;

I want to change the data of a column on gridlines (the currency as the above code),

but I cannot see the changes.

What shall I do in order to refresh the data of the browser client side?

Thanks :)