As long as you have the disk version of SH5
They don't reaaly clash as I and many others have been using them for a long time together. Install TDW UI first and then OH later. The problem you describe is usually the result of an incorrect option edit in TDW UI. You can insure that is correct by using the OptionsFileEditorViewer you will find in the Application folder of TDW's MOD. It is easy and should insure your menus work fine.
You might also want to also use TDW's Generic Patcher which you download here
http://www.subsim.com/radioroom/down...o=file&id=4591
Good lUck!