License for 3.2.0001

Hi,I got a site license for IntelliCAD 2000.My current serial no. does not work for this new upgrade.Does this new version requires new $$$?I haven't got the chance to use ICAD 2000 in my company due to so many bugs and unreliability. We are still using ICAD98.I just want a simple realiable ICAD that support AutoCAD 2000 file format. Can BricsCAD do this.Leon