May 31 (Reuters) - DTI Group Ltd DTI.AX :
* PETER TAZEWELL RESIGNS AS CHIEF EXECUTIVE OFFICER
* FRANK HAVELKA APPOINTED AS ACTING CHIEF EXECUTIVE OFFICER
May 31 (Reuters) - DTI Group Ltd DTI.AX :
* PETER TAZEWELL RESIGNS AS CHIEF EXECUTIVE OFFICER
* FRANK HAVELKA APPOINTED AS ACTING CHIEF EXECUTIVE OFFICER