Please help: Want to replace vista with Win 7

My laptop is vista (Sony vaio VGN-NR220E), painfully slow, specs are listed here: http://reviews.cnet.com/laptops/sony-vaio-vgn-nr220e/4507-3121_7-32876313.html.

I finally decided to install Win 7 to replace vista.  I looked up the requirements. Here are what is recommended for installing Win7:

• 1GHz 32-bit (x86) or 64-bit (x64) processor
 (UITS recommends: A dual-core (Core 2) processor)
• 1GB of system memory
 (UITS recommends: 2GB system memory)
• A graphics processor that is DirectX 9-capable with Hardware Pixel Shader v2.0 and WDDM Driver support
• 128MB of graphics memory
 (UITS recommends: 256MB graphics memory; non-integrated video card)
• 40GB of hard drive capacity with 16GB free space
 (UITS recommends: 80-100GB capacity)
• DVD-ROM drive

It seems my laptop has met all the requirements. But I am not very hardware pro. Can some kind experts help me check it out to make sure I can install Win 7 on my laptop? What are some things I need to be careful?

Thanks a million!!

所有跟帖： 

• 將RAM加到2GB會有改善. 裝WIN 7之前,先找齊所有驅動程序. -woodridge88- ♂ (24 bytes) () 04/29/2011 postreply 08:34:51

• 回複：將RAM加到2GB會有改善. 裝WIN 7之前,先找齊所有驅動程序. -newcomer2009- ♀ (230 bytes) () 04/29/2011 postreply 08:57:34

• 加RAM去BESTBUY可以($17.99 * 2 + labor + tax) -woodridge88- ♂ (68 bytes) () 04/29/2011 postreply 09:40:03

• 你應該有一套backup CD,那裏有你筆記本需要的所有驅動,還有廠家網站 -滿地找牙- ♂ (534 bytes) () 04/29/2011 postreply 09:57:45

• 回複：你應該有一套backup CD,那裏有你筆記本需要的所有驅動,還有廠家網站 -newcomer2009- ♀ (343 bytes) () 04/29/2011 postreply 10:23:16

• 一樣需要所有驅動程序,也需要加大內存 -滿地找牙- ♂ (82 bytes) () 04/29/2011 postreply 12:18:26

• What you need to do is: -WhoCaresWhoYouAre- ♀ (723 bytes) () 04/29/2011 postreply 19:21:02

• 最重要的還是驅動。 -名要正言要順- ♂ (122 bytes) () 04/30/2011 postreply 19:22:56

• 首先上網查詢該筆記本是否有WIN7驅動程序，包括外圍設備（打印機等）。 -TZMAN- ♂ (0 bytes) () 05/02/2011 postreply 17:35:46