Installing Windows XP 32bit on a laptop

Hello. Long story short I have a program that will ONLY work on a 32-bit OS. Currently I have Windows 7 Home Premium 64bit on a laptop with no CD-Drive.
I am trying to use Oracle VM VirtualBox to run a virtual copy of an .iso of windows xp (32bit.). Unfortunately, to run a virtual copy I believe I first need to mount the .iso to a CD (But i have to optical cd drive).
I have been trying now to make a 32gb memory stick bootable so that Oracle will recognize it and let me run a virtual installation…
NEED HELP PLEASE!
Answer #1
to run a virtual copy I believe I first need to mount the .iso to a CD (But i have to optical cd drive).
you can “mount” the ISO image on a “virtual” drive
http://www.magiciso.com/tutorials/miso-magicdisc-overview.htm
Answer #2
You don’t need any mounting software for this task. Virtualbox can mount it directly!
Settings>Storage>Empty>Click on the CD icon on the right>Select “choose a virtual cd-dvd disk file” and browse to the ISO.
Answer #3
I keep a QEmu and a img file of a installation ox XP Micro – the rar file is 140, expands to about 350 Mb.
Any time I want to run an XP program I just edit the bat file that starts it to point to the iso file and run it.
do what i want then shut it down. Simples..