How to have two styles for heading 1?



in my documents:

heading 1 = chapter one, chapter two, chapter three, ...
heading 2 = 1.1, 1.2, 1.3, ....
heading 3 = 1.1.1, 1.1.2, 1.1.3, 1.1.4,...

and thus the caption of figures, tables and equations are:

Figure 1.1, Figure 1.2, Figure 1.3,...
Table 1.1, Table 1.2, ...
Equation 1.1, Equation 1.3, ....

later i need to have another heading in the same level of heading 1

heading 1 = appendix A, Appendix B, Appendix C, ...

and thus the caption of the figures, table and equations will carry the number of index:

Figure A.1, Figure A.2, Figure A.3,...
Table A.1, Table A.2, ...
Equation A.1, Equation A.3, ....

Is there away to achieve this?

regards

Jamal

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