Forget the tram, part of the network is shut at the mo and even then it wouldn't get you anywhere near.
If you're on the Prom, get the #1 to Starr Gate and then switch to the #7 (you'll need to get off the 1 before it turns inland to Blackpol Airport).
The 7 takes you to Ansdell footbridge which takes you over the railway from where it's 5 mins walk to the ground.
Alternatively, stay on the #1 another couple of stops to Squires Gate Station and get the train to Ansdell & Fairhaven, which is 5-7 minutes walk from the ground (Kev B is quick
).
Blackpool Transport's website is pretty good for buses:
[urlhttp://www.blackpooltransport.co.uk/index.html[/url
If you're on Queens Prom at North Shore you'll need to allow a good 60 or so minutes travelling time, the bus ain't quick!