Need help for upgrading a PC

[ALIEN'D]

My PC has
Intel Core 2 Duo E7300 2.67Ghz
1 GB DDR2 667 MHz
180W PSU
MSI motherboard
Micro-ATX Case
Lightscribe DVD+/-RW CD+/-RW
HP w185 Monitor (18.5 HD Display)
Windows 7 Ultimate
250 GB HDD
GMA 3100 Onboard

Now I want to upgrade the PC with a modest budget of 30000.
Please note that I won't upgrade the HDD,Monitor,Case and DVD Writer. I want to upgrade the Processor,RAM,Motherboard,PSU and all those except the HDD,Monitor,Case and DVD Writer. Also please give a graphics card which has VGA output also.

1. What is the purpose of the computer? What all applications and games are you going to run? (Stupid answers like 'gaming' or 'office work' will not work. Be exact. Which games? Which applications? Avoid the word 'et cetera.')
Ans: I will be using it for playing Assassin's Creed and NFS MW 2012 and some graphic intensive applications as well as AutoCAD

2. What is your overall budget? If you can extend a bit for a more balanced configuration, then mention this too.
Ans:30000(+/-30000)

3. Planning to overclock?
Ans:No ... Not at all

4. Which Operating System are you planning to use?
Ans: Windows 7 Ultimate 32

5. How much hard drive space is needed?
Ans:250GB

6. Do you want to buy a monitor? If yes, please mention which screen size and resolution do you want. If you already have a monitor and want to reuse it, again mention the size and resolution of monitor you have.
Ans:No,I don't want to have monitor, I have HPw185 1366x768.

7. Which components you DON'T want to buy or which components you already have and plan on reusing?
Ans:Monitor,Case,HDD,Windows,Keyboard,Mouse,CPU Cooler and DVD writer.

8. When are you planning to buy the system?
Ans: Pretty near (In a month)

9. Have you ever built a desktop before or will this be done by an assembler?
Ans: I have built before.

10. Where do you live? Are you buying locally? Are you open to buying stuff from online shops if you don't get locally?
Ans: In Gujarat,Gandhinagar. I will buy from Flipkart.

11. Anything else which you would like to say?
Ans: Nope

(Thanx the1337est)

 

[the1337est]

Fill this first and add it to your first post:

1. What is the purpose of the computer? What all applications and games are you going to run? (Stupid answers like 'gaming' or 'office work' will not work. Be exact. Which games? Which applications? Avoid the word 'et cetera.')
Ans:

2. What is your overall budget? If you can extend a bit for a more balanced configuration, then mention this too.
Ans:

3. Planning to overclock?
Ans:

4. Which Operating System are you planning to use?
Ans:

5. How much hard drive space is needed?
Ans:

6. Do you want to buy a monitor? If yes, please mention which screen size and resolution do you want. If you already have a monitor and want to reuse it, again mention the size and resolution of monitor you have.
Ans:

7. Which components you DON'T want to buy or which components you already have and plan on reusing?
Ans:

8. When are you planning to buy the system?
Ans:

9. Have you ever built a desktop before or will this be done by an assembler?
Ans:

10. Where do you live? Are you buying locally? Are you open to buying stuff from online shops if you don't get locally?
Ans:

11. Anything else which you would like to say?
Ans: