Here are the venue details, as mentioned on http://www.ascension-uk.com/: Ascension is located on Oldham St (near Piccadilly Gdns), one minute from Tib St carpark. Formerly known as Planet K.
Here are the competition details again, as posted on the news page 23:10:2002:
23:10:2002 - 808 Competition time
The 808 State live event on 22 December in Manchester is now confirmed and tickets are on sale through ticketweb or by calling 0161 832 1111 in Manchester. If you are feeling lucky, mcr:music are giving away two pairs of VIP guest tickets. To enter, simply name one of the guest vocalists on the 808 State album 'Outpost Transmission' and e-mail your answer to firstname.lastname@example.org . Subject 808 State Ascension competition. Closing date is 19 December, winners to be announced on 20 December.