Could someone help me in the following:

a) I have telephone no.'s under tele column appearing as lets say 0161 000 000
or 0161 00 0000 or 161 0000 00 showing no consistency and pattern . I would
appreciate if someone can help me in
i) adding a 0 (zero) in the start of the number if it does not exist and
ii) if there is a way I can delete spaces between no.'s e.g. the above
appearing as
0161000000 in all the above scenarios
iii) Formula to add spaces after first 4 digits followed by 2 no.'s and
again some spaces and
then the remaining no. e.g. 0161 00 000

b) Outlook Express

I have my address book with 100's of addresses and I wanted to find if there is
a way I can keep a track of any new addresses added after today. I have not used
a date column before in Outlook so what is the best way to generate addresses
added after today ?