Can i replace the graphic card of my Thinkpad T510 laptop?

And what are the graphic cards i can buy for it, at a range of 25 to 150 $.

Dxdiag:

System Information

System Information
------------------
Time of this report: 7/2/2014, 14:58:29
Machine name: MUAZ-PC
Operating System: Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.140303-2144)
Language: Bosnian (Latin) (Regional Setting: Bosnian (Latin.
System Manufacturer: LENOVO
System Model: 4349R12
BIOS: Ver 1.00PARTTBLx
Processor: Intel(R) Core(TM) i5 CPU M 540 @ 2.53GHz (4 CPUs), ~2.5GHz
Memory: 4096MB RAM
Available OS Memory: 3892MB RAM
Page File: 2608MB used, 11280MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 64bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: Intel(R) HD Graphics
Manufacturer: Intel Corporation

Added (1). Chip type: Intel(R) HD Graphics (Core i5)
DAC type: Internal
Device Key: Enum\PCI\VEN_8086&DEV_0046&SUBSYS_215A17…
Display Memory: 1696 MB
Dedicated Memory: 64 MB
Shared Memory: 1632 MB
Current Mode: 1366 x 768 (32 bit) (50Hz)
Monitor Name: ThinkPad Display 1366x768
Monitor Model: unknown
Monitor Id: LEN40B0
Native Mode: 1366 x 768(p) (59.997Hz)
Output Type: Internal
Driver Name: igdumd64.dll, igd10umd6

Added (2). Driver Name: igdumd64.dll, igd10umd64.dll, igdumdx32, ig…
Driver File Version: 8.15.0010.2622 (English)
Driver Version: 8.15.10.2622
DDI Version: 10
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 1/10/2012 22:28:32, 8313856 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B78E66-4306-11CF-247E-5001A2C2C535}
Vendor ID: 0x8086
Device ID: 0x0046
SubSys ID: 0x215A17AA

Added (3). Revision ID: 0x0002
Driver Strong Name: oem14.inf: IntelGfx.NTamd64.6.0:iILKM0:8…
Rank Of Driver: 00E60001
Video Accel: ModeMPEG2_A ModeMPEG2_C ModeWMV9_B ModeWMV9_C ModeVC1_B ModeVC1_C

I can also get information about the computer from Aida Extreme if its needed.

Added (4). Anthony: i can't find my laptop there, i think its too old.

No. This question has been asked a million times before. Unless your laptop is a gaming laptop and advertised upgradability like CLEVO laptops the GPU you get is the one you have to keep as its part of the motherboard.