Keep your XP Home. The basics of what XP Pro has over Home is... -Multi-processor support - (supports up to two microprocessors, while Home Edition supports only one) -Automated System Recovery and backup utilities -Web server software -Security features supporting file encryption -Enterprise and advanced networking features (so XP Pro machines can join active domains) Other than that,you won't gain anything in the way of performance or a more stable OS (course performance and stability are not really an issue with either). SWAMP