Can I install a gt 640 1gb ddr5 in my pc?

My PC is a Lenovo Thinkcentre M57 6066
Specs:
Intel 2 Quad processor 2.40 GHz
4 GB RAM DDR2
Intel Q35 express chipset family
Slots
Slot 1: full length, low profile-height 32-bit PCI 2.3 (5v)
Slot 2: half-length, low profile-height, PCI Express x16
ACPI 280 Watt power supply with manual voltage selection switch
Automatic 50/60 Hz input frequency switching
150 gb hard disk 7200RPM

If there's a better graphics card than the gt 640 and is capable of running in my pc please tell

IMB thinkcentre 8172, won't boot up

Only fan at top speed, monitor doesn't even come on. Iv been trying to update an install drivers for internet for audio, video controller etc. Which is strange cos windows xp professional has only just been downloaded an installed on this computer. Anywho, all its doing now is when i turn it on it beeps 3 times then 1 time then 4 times an then 3 times. Surely this must tell somebody wats wrong with my machine?

How to print from my lenovo s10-3 netbook?

I bought a canon pixma ip2700 and i don't have a laptop or a cmputer desktop so how can i install it or print from my netbook? Do a just need a usb cable? Do i have to install the software?

Arma 3 PC build to run on ultra 60 fps?

What would be a good PC build to run Arma 3 on ultra at around 60 fps. I joined a realism unit and currently run arma off an older lenovo laptop (got it last year) and it just isn't doing as well as i want. I got a good paying job so money isn't really an issue. What would you recommend for a GOOD PC build? I'm great with assembling them and software etc… But am not really the best at deciding what parts to buy. Also needs to be wireless or connected via ethernet cable MUST HAVE BOTH OPTIONS and i do like to watch movies as well, i do not need a monitor because ill be using a TV i need a powerful desktop PC and also maybe a good gaming mouse (the one i own now is a cheap walmart mouse) it would be nice if it could also run GTA V on ultra or high. Plus do you recommend i7 or AMD and what are the benefits of both?

Lenovo computer won't load anything?

Windows was installing an update all night so I turned the computer off. When I turned it back on it loads completely fine, then when I click on anything such as chrome to load and a grey screen pops up and then go back to the home screen not loading any programs.
I tried to do a factory reset and it was unable to complete.
Can anyone suggest a way at home to fix it or any idea of how much the cost to fix would be?