VPS PROVIDERS OFFERING TRIAL ACCOUNTS THAT YOU CAN USE FOR MINING

http://www.windowsazure.com (90 days free trials - 200$ to use)

http://aws.amazon.com/  (for one year)
http://chunkhost.com  (14 days free trials)
http://www.triple8.net/vps.htm  (7 days free trials)
http://www.zunicore.com  (14 days free trials)
http://instantappz.com  (7 days free trials)
http://www.rsawebcloud.com  (7 days free trials)
http://www.dedicatedserver.com/  (they will give you $200 to use)
http://www.gogrid.com  (VM) (they will give you $100 to use)
http://www.phoenixnap.com/secured-cloud/  (for one month) (they will give you $50 to use)
http://airvm.cloudhostedservers.com (7 days trial)
http://www.serverlove.com/free-trial  (for one month) (they will give you £15 free credit to use)
http://cloud.atlantic.net/index.php?page=newsignup  (for one month) (they will give you $15 free credit to use)
http://www.softlayer.com/info/special-free-cloud  (for one month)
http://www.digitalocean.com (10$ free credit to use)
http://www.linode.com (4 hrs per instance)
http://www.ardhosting.com/vps_trial.php 
http://timeweb.ru/services/vps/
http://www.combell.com  (10 days free trial)
http://www.instantappz.com/vps-hosting-plans.php  (7 days free trial)
http://mchost.ru/services/linux-vps  (10 days free trial)