change the saved path of huge number of xref in different files in Autocad 2010

I am using Autocad 2010 and I have transfered the data base to another location, but all the xref stayed at the same place: D:\profiles\sources\, now the xref manager shows that all the files attached to some file are n开发者_JAVA技巧ot found. How do I change the save path of all the xref to: G:\database\profiles\sources\ It Thanks.

Following up on your comment on knowing C++, the Main API for AutoCAD, called ARX, is C++. Start here: http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=1911627 for an overview and have a look at the links on Developing plugins for AutoCAD?