Geography Data - How to add a new SRID

Hi all Geo Experts,

am I newbie to SQL Server spatial data processing an I have side by side questions:

I would like to add a new SRID/EPSG definition to SQL Server. I have the EPSG definition which look like this:

PROJCS["DHDN / Gauss-Kruger zone 3",
    GEOGCS["DHDN",
        DATUM["Deutsches_Hauptdreiecksnetz",
            SPHEROID["Bessel 1841",6377397.155,299.1528128,
                AUTHORITY["EPSG","7004"]],
            AUTHORITY["EPSG","6314"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.01745329251994328,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4314"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",9],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",3500000],
    PARAMETER["false_northing",0],
    AUTHORITY["EPSG","31467"],
    AXIS["Y",EAST],
    AXIS["X",NORTH]]
My questions:
1. Is it possible to add a EPSG definition as a new SRID to SQL Server?
2. Is there a function which I could use to convert geographical objects from one SRID to another?
TIA so much.

Regards Jörg