I have an HP laptop with an Intel® Core™ 2 Duo processor T7700 2.40 GHz , Level 2 cache 4 MB, with 2 x 2048 MB RAM, with 640 GB Hard drive (2 x 320 GB). The C drive has the XP OS, and my D drive is now empty and re-formatted. Can I load Win7 onto the D drive and have my laptop as a dual boot system, and will this type of installation affect the XP installation in any way? Any advice will be appreciated. Thanks.