Anyone install Windows 7 32-bit HOME Premium lately to share the INSTALLATION SIZE after SP1 and updates etc, before programs are added to share the installation size?

I was thinking about reversing the drives in my wifes system to make it more responsive to make the SSD the boot drive and make her IDE HDD the software installation drive, but her SSD is only a 30GB SATA II drive, and I am curious as to if itis large enough to take a Windows 7 32-bit Home Premium installation or not without going into a rebuild to find out it ran out of space.

Her computer is a Core 2 Duo E6600 2.4Ghz with 2.5GB DDR2 667Mhz RAM and Windows 7 Home Premium installed currently to a 160GB ATA100 IDE HDD, and I feel that the performance gain would be pretty noticable if I swapped roles of the 2 drives by placing the OS onto the SSD and placing the other software on the IDE HDD. She uses the computer mostly for web surfing and watching netflix and hulu and facebook games, and occasionally runs World of Warcraft. I tested the load time of World of Warcraft on the IDE HDD VS the SSD and the SSD loads the game about 10 seconds faster than the IDE drive, but once loaded the game runs normal. I am thinking she would feel like the computer is a new computer with an SSD as the main drive.I've run Windows 7 Pro X64 on a 30GB SSD for the best part of a year. I have a couple of lighter games, a bunch of programs and some data, and 6GB free space which is adequate. I disabled hibernation as it's a waste of space, other than that I didn't make any major tweaks. IMO, there's no need to limit EVEN a 30GB SSD to be "just" the boot drive, it's perfectly feasible to install software on it as well.Thanks for the info. Will perform the drive swap then.