How can i load windows 7 on my acer 4002LCi? -

my acer 4002Lci is quite an old laptop with 512 mb of ram and a 80gb hdd,first of all i need to know if windows 7 would work on this machine,moreover my optical drive does support dvd s anymore,i dont know why but it just stopped working now it just loads cds,so i downloaded the windows 7 beta in my dad s laptop,and transferred it to my 4gb pendrive,my pendrive is empty except for the 3.86 gb of windows 7,i need to know if i can boot from my pendrive by changing bios setting,so far i have been unsuccesfull. (i have also backed up my data). Any suggestions on what i should do?

Windows 7 will not load on any computer of that spec. What is on the pendrive? Just the ISO file of the DVD? You cannot boot from that without first being able to mount the DVD image as a readable drive. And you can t do that without an OS on the target machine. You need to create the pendrive as a bootable media. Google is your friend for this.