I am having some real bad graphic issues when I zoom in and out of Creo Parametric 2.0

Without more info, here's something to start with to diagnose the problem:

1) Update display drivers

Make a Restore Point, or full backup before updating graphics drivers
Make sure you understand how to use the Restore Point or backup to restore your operating system and data
Look for drivers from the makers of the computer first, then the maker of the card, finally from the maker of the operating system
Note: sometimes the most compatible graphics driver version is not the latest version. Be prepared to look for and try older versions.

For AMD/ATI cards try http://support.amd.com/us/gpudownload/Pages/index.aspx

2) Avoid using hardware acceleration
Mostly avoided by setting the config option "graphics win32_gdi"
Alternatively try "graphics d3d" for Creo 1, Creo 2, Creo 3

Also possible to add startup command option
1. Right Click on software (Creo) shortcut icon > Properties
2. Click in Target path and move cursor to extreme right (at the end of .....exe")
3. Add a space after .exe"
4. Type -g:win32_gdi > Apply > Ok

3) Use hardware acceleration, but disable some features (try one at a time)
May also benefit from the following config options, Creo Parametric 2.0 M090 and higher:
enable_opengl_fbo no
enable_opengl_vbo no
enable_opengl_shader no
ref http://communities.ptc.com/message/244856#244856
Note: fbo = frame buffer object; vbo = vertex buffer object; shader is shader object.
These are part of later versions of OpenGL.

4) For better performance with win32_gdi, try setting the display to 16 bit in the OS system manager.

Other links in PTC Community:

Creo may not support Display Link see http://www.displaylink.com/support/ticket.php?id=199

Creo may not support AMD Radeon X1300, esp Win 7

Creo may not support ATI Radeon X1950Pro http://communities.ptc.com/thread/37833

Creo may not support ATI Mobility FireGL V5200 see creo parametric 2.0 won't load | PTC Community

Creo may not support ATI Radeon 9600 Pro http://communities.ptc.com/thread/52085

Creo may not support ATI Radeon HD 5450 http://communities.ptc.com/thread/42898 http://communities.ptc.com/thread/40231 (crash)

Creo may not support ATI Radeon HD 5650 http://communities.ptc.com/thread/53983

Creo may not support ATI Radeon Xpress 1100 see creo parametric 2.0 won't load | PTC Community

Creo may not support Nvidia geforce GTX550 http://communities.ptc.com/thread/58258

Creo may not support Nvidia geforce GTX 285M http://communities.ptc.com/thread/41068

Creo may not support Nvidia geforce gtx 660m http://communities.ptc.com/thread/42192

Creo may not support Nvidia Quadro K1100M http://communities.ptc.com/thread/56289

Creo may not support Intel 4400 below Creo 3 M010 see http://communities.ptc.com/thread/49896

Creo may not support Intel Embedded Graphics http://communities.ptc.com/thread/56357

Creo may not support Intel HD 4000 see http://communities.ptc.com/thread/52279

Creo may not support Intel HD Graphics 3000 see http://communities.ptc.com/thread/39759

Creo may not support Lenovo T60 http://communities.ptc.com/thread/40334

Creo may not support MacBook Pro (Retina http://communities.ptc.com/thread/59187

Creo may not support Netmeeting on OpenGL, does on win32_gdi http://communities.ptc.com/thread/1984

Creo may not support Nvidia nView Desktop Manager http://communities.ptc.com/thread/33357

Creo may not support Sapphire ATI HD 5970 OC see http://communities.ptc.com/thread/37682

Creo may not support Windows 7 Home Premium http://communities.ptc.com/thread/50468

Creo 2 M080 may not support Quadro/OpenGL - unusual instance - http://communities.ptc.com/thread/41485