You can do this with a tower but there is a more effective way to do it if you don't need to capture and ill be posting that instructable soon.
Also im going to post an instructable on how to do this with s- video because it gives you a better video quality.
Please rate if you like this instructable. If there's something wrong or its not working leave a comment.
Step 1: My System
Windows Version: Windows Vista Home Basic
windows experience rating: 3.1
Processor: Intel(R) Pentuim(R) Dual CPU T2370 @ 1.72 GHz 1.73GHz
Memory(RAM): 3062 MB
System Type" 32-bit operating system
Step 2: What You Need
1)A EasyCap usb Capture card
2)A usb extension cord (optional)
3)Three RCA female couplers
4)5 RCA cables (i used 1 yellow, 2 red two 2 white)
5)Two RCA splitters
6)L/R RCA to 1/8 plug
7)1/8 female to 1/8 female coupler
8)1/8 Headphones/1/8 Speaker
Most of this stuff you can get a radio shack. the only thing you can' t get there is the easycap usb capture card. you can get the easycap on ebay but i would avoid that because theirs a lot of fakes that ether have crazy lag or don't work properly.
Step 3: Install
Step 4: Setup
1)The Y/R/W cables on the console plug those in to the female to female couplers
2)On the the red and white plug in the rca splitters
3)add rca cables to the 2red 2whit and 1 yellow
4)plug 1 red 1 white and 1 yellow in to your easy cap. add a USB cable to the end if you wish.
5)plug the l/r RCA to 1/8 adapter to the end of the other two RCA cables. plug the 1/8 female to 1/8 female on the end of the l/r RCA to 1/8 adapter.
I know this is a mess of cables but all are needed because easycap does not monitor audio meaning you can not hear you game through your laptop speakers thus requiring external speakers.
Step 5: Getting Ready to Get Your Game On.
Step 6: Getting Your Game On
1)Turn you speakers on
2)Get your controller
3)hit the maximize preview button(right hand corner of preview window oval with 4 triangles around it)
4)recline your chair
5) get ready to pwn some noobs
Step 7: Graphics Comparisons
Step 8: Other Notes
ALWAYS set the video to constant bit rate. you can do this by clicking options/ video and audio capture settings/ the capture tab/ advanced/ then change bit rate to constant bit rate.
when you start to capture a video do it well the game is paused because the video will freeze for 3-5 second but then it will return to normal.
If the screen looks too dark you can change it by clicking options/video and audio capture settings then the color tab.
This is not intended for people with 50+ inch TVs its meant for people like me who have a 20 inch to play on and figure they would be better off on there laptop.
Please rate if you liked this instructable. If there's something wrong or its not working leave a comment.