Nina Solarz, wife of former New York congressman Stephen Solarz, agreed today to plead guilty to two misdemeanor charges of writing a bad check on her husband's House bank account and improperly taking $7,500 from the American Friends of Turkish Women, a charity she runs. Mrs. Solarz admitted that she knew her husband's House account was overdrawn when she ordered a congressional staffer to write a check for $5,200 in 1990. She is not expected to serve jailtime. Ex-Rep. Solarz, who himself had a large number of overdrafts from the House Bank, was cleared by a task force. It was the eleventh criminal charge to emerge from the 1992 "Rubbergate" scandal.