The "New PC Treasures High Achiever Grammar" CD is a sealed software product designed to enhance grammar skills. Compatible with various Microsoft Windows operating systems, this program offers advanced grammar exercises and tools to improve language proficiency. Created by PC Treasures, this software is specifically tailored to help users achieve higher levels of grammar proficiency and accuracy. With its user-friendly interface and comprehensive grammar features, this CD is an ideal resource for both individuals looking to improve their grammar skills and businesses seeking to enhance their employees' language abilities.