Filtering Dates

I have a three columns of data in A,B,& C.

In column A a From Date
In column B a To Date
In column C a 6 digit number

I would like some code to achieve the following in this order:

1) Find any duplicates of the 6 digit number in column C and then place them on the same row as the first.

I.E if the following three matches are somewhere in columns A, B and C:

A B C
08/07/2007 22/12/2007 731655
22/12/2007 29/12/2007 731655
29/12/2007 05/07/2008 731655

I want them to place on the same line in date order like:

08/07/2007 22/12/2007 731655 22/12/200729/12/2007 731655 29/12/2007 05/07/2008 731655 (this line would be on the line above)

2)After all the above has been done I would like the code to go through and looking for matches of dates between column B and A

For example if I had the below two dates somewhere in the list:

A B C
08/07/2007 04/08/2007 729955
04/08/2007 01/09/2007 729293

I would want the bottom one to be moved to the same line as the top like:

A B C D E F
08/07/2007 04/08/2007 729955 04/08/2007 01/09/2007 729293

If there are more than one match like below:

A B C
08/07/2007 04/08/2007 729955
04/08/2007 01/09/2007 729293
04/08/2007 01/10/2007 729273

I would like the following:

A B C D E F
08/07/2007 04/08/2007 729955 04/08/2007 01/09/2007 729293
04/08/2007 01/10/2007 729273

3) AFter this was completed I would like to look for date matches one day apart for example:

A B C
08/07/2007 04/08/2007 759955
05/08/2007 01/09/2007 759293

And then place the bottom set of date along side the top like:

A B C D E F
08/07/2007 04/08/2007 759955 05/08/2007 01/09/2007 759293