Use [code][/code] tags. Fix the using statements; they need to end with a semicolon and have a space after using. All keywords are all in lower case. You have a couple different brace errors, where you have used the opposite brace or parentheses instead.
1. One of your IF statements is capitalized
2. Using end1 instead of endl
3. WHILE loop outside of main
4. Dividend used when dividend was declared (c++ is case sensitive)
5. Same with Remainder
6. DO opened with a ( instead of a {
7. Missing ; after endl
8. : after return instead of ;
9. "is": instead of "is: "
For starters....
Please use the code formatting tools when posting.