how can i make this:

JUNE 2008 JULY 2008
Advertiser Real Players Advertiser Real Players
9235 0 17 0
12345 0 9235 0
24168 20 12345 0
Mar-77 0 24168 10
32271 0 32271 0
69911 0 40502 0
70434 0 69911 0
78309 0 70434 0
100105 0 78309 0
112233 0 100105 0
121212 0 121212 0
123830 0 123830 0
130295 0 130295 0
161718 0 161718 0
175739 0 175739 0
__________________________________________________ __________________
into this:

Advertiser JUNE 2008 JULY 2008
XXX XXX XXX

Note: worksheet contains 10,000 rows, some advertisers in JUNE are not in
JULY stats & vice-versa. what i want to do is consolidate the advertisers in
columnn A without repeating anyone of them with corresponding JUNE & JULY
stats to get the variance per advertiser and i have to do it as fast as i
could to meet the deadline. can anyone help me on this, thanx.