you can get the missing dll file from http://www.huihuang.bizland.com/
but u might find that when u install the file and run gnucleus it will update to 1.9.9.5 and when u restart it there will be another dll file missing (dpcore.dll) so when gnucleus tries to evovle just cancel it 1.8.5 will run o.k. as this is the problem i am having and am just waiting for someone to post a reply for the missing ddl file

hope this helps