as was mentioned earlier - I am also having a problem with the delete button.
Fresh install of oscommerce v2.2 RC2
dropped in all the code changes from Quotes_V_1.2.zip
I coppied and pasted the text quotes.sql into phpmyadim 'run sql' window. <- could have this caused problems instead of importing the text file though 'import'?
I put stuff in my cart - press quote - coppy stuff form cart - enter name and email address - send request.
goto admin - click on quotes - quote is there. press delete - screen refreshes and quote is still there.
I tried some of the code changes from previous posts - nothing seems to work.
thanks for all your work!