The only problem ghosting is that sometimes Windows won't run properly even though all files, folders, and settings are preserved. The 10gb drive is probably running at 5,200rpm or even less while the newer and larger drives run at 7,200rpm. Western Digital's 75gb Raptor Serial ATA drive tops over that even with the 10,000rpm seen there. With at least 25% of the drive already taken up by XP's installation and reserving some 2gb for swap files you are better off performing a clean install to new and larger drive after deciding whether or not to split into more then one partition. Here I now run two 250gb drives(bought second when hearing strange clicking sound caused by old board failing) where the second has 135gb primary used for backing up the host drive. The remaining space will probably be used by a version of Linux.
When downloading files to a specific folder and then closing that out to browse and then going to download something later the last folder opened to save the prior download will appear. Everytime you download you will see the last folder a file was downloaded to. I usually recommend creating a folder outside of MyDocuments, Windows, and Program Files for saving downloads of various types to. In that folder several sub folders for things like updates, utilities, drivers, even media files are kept out of the way of most viruses, malwares, spywares, adwares, etc. since they mainly attack default locations for Windows and softwares. In the even of needing to reinstall Windows those files are still intact. A single drive with a second partition for storage and backups is often seen. If the primary has to reformatted due to some infection the secondary generally remains uneffected. In fact XP will create a new primary and still see the secondary after a fresh install. If you have never had a drive larger then your current one you are in for a big surprise when you see how much more space you will have there.