It is any way to import Mapinfo files to Autocad Map with line and polygon style definitions cereated in Mapinfo?
From Autodesk Map 3D Online Help:
You cannot import TAB symbol types directly. However, if you store the symbol type information in a column in a DAT file, you can map each symbol type to a block in the current AutoCAD Map 3D drawing. To do this, prepare the TAB file by putting the name of the symbol type into a field in the database. Prepare the AutoCAD Map 3D drawing by creating similar symbols as blocks in the AutoCAD Map 3D drawing. Then, during import, perform a point-block mapping and select the check box to get the block name from data and select the symbol type field you created.
By default, object colors are imported to their closest ACI (AutoCAD Color Index) color. To import object colors using RGB (True Color), you must edit the mapimport.ini file.
To change the default text justification setting for TAB, edit the mapforeignfileproperties.ini file.