your comp doesn't meet the minimum requirements to run the game. you will need to get yourself a new computer. sorry to have to say that. i don't think there is anything we can do to even make your system run the game. 
I have to second what Quint said. That system will never run the game. It would be nice if it were really made clearer on the game box just how high end a system this game takes to run well. Even the minimum requirement systems won't make for a pleasant game experience.
Don't count your weasels before they pop dink!
I am having difficulty loading into any zone with any character. I will login normally but sometimes it will not load into the zone and I will return to the login screen. Also when I do load up (after about 5 minutes) I can't load into any other zone without disconnecting and going back to the login screen. I used the coh helper and got the following info: (any suggestions?)
---System information gathered by CoH Helper version 0.2.0.2---
DxDiag gathered at August 31, 2010 20:48 (-05:00)
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.100427-1636)
System Manufacturer: Gateway
System Model: Gateway M460
BIOS: Rev 1.0
Central Processor: Intel(R) Celeron(R) M processor 1.50GHz
Memory: 502MB
.Net Memory Report: 89MB out of 502MB available
Page File: 4856MB (735MB currently in use)
C Drive: (HTS541080G9AT00) 23795MB out of 76316MB (31%) free
D Drive: (PHILIPS CDRW/DVD SCB5265) zero-size drive
Windows directory location: C:\WINDOWS
DirectX: DirectX 9.0c (4.09.0000.0904)
DirectX Diag version: 5.03.2600.5512 (32-bit version)
Display Notes: No problems found.
Sound Notes: No problems found.
Input Notes: No problems found.
Monitor: Plug and Play Monitor
Monitor's Max Resolution: 1600,1200
Video Device Name: Mobile Intel(R) 915GM/GMS,910GML Express Chipset Family
Manufacturer / Chip: Intel Corporation / Intel(R) 915GM/GMS,910GML Express Chipset
Video Memory: 96.0 MB
Driver Version: 6.14.0010.4764
Driver Date: 1/13/2007 10:33:00 AM
Driver Language: English
Sound Device Description: Conexant AMC Audio
Driver File: camc6aud.sys
Driver Version: 6.14.0010.0565
Driver Date: 3/31/2005 3:46:10 PM
WMI Information
Motherboard Manufacturer: Gateway
Motherboard Model: (empty)
Motherboard Product:
Motherboard Version: Rev 1.0
BIOS Manufacturer: Gateway
BIOS Name: Rev 1.0
BIOS Version: GATEWA - 20041012
BIOS Release: 20051012000000.000000+000
Registry Information for Current User
Resolution: 800x600
3D Resolution: 800x600 (Not using renderscale)
Full Screen: Yes
Maximized: No
Screen Position: 0, 0
Refresh Rate: 60Hz
Vertical Sync Enabled: No
Physics Quality: None
Maximum Particles: 100
Max Particle Fill? 10.000
Physics Card Enabled: No
Anti-aliasing: Off
Anisotropic Filtering: None
Texture LOD Bias: Crisp
Water Effects: None
Bloom: 1.000 (turned off)
Depth of Field Enabled: No
Desaturation Effects (Sepia) Enabled: No
Shader Detail: Unknown (4)
World Texture Level: Unknown (3)
Character Texture Level: Low
World Detail Level (Vis_Scale): 0.500
Entity Detail Level: 0.300
Shadows Enabled: No
Shadow Mode: Disabled
Shadow Map Shader: Unknown (0)
Environmental Reflections: Disabled
Advanced Occlusion Settings: No
Ambient Occlusion: Off
Occlusion Strength: Off
Blur: Bilateral
Ambient Resolution: Performance
Gamma Correction: 1.000
Geometry Buffers (VBOs) Enabled: No
Suppression of FX When Camera Close Enabled: Yes
Close Suppression Range: 3.000
Show Advertisements: Yes
Audio Mode: Compatiblity
3D Audio: No
FX Sound Volume: 1.000
Music Sound Volume: 0.600
Show Advanced Graphics Options: No
Overall Graphics Quality: 0.000
Reverse Mouse Buttons: No
Save Login Username: Yes
Transfer Rate: 102868 bytes/second
Current Game Version: 1850.201007290124.24T2
Installation Directory: C:\Program Files\City of Heroes
Mod files in the Data directory
No modifications found