Gmod Memory Error ATI Xpress 200

I got the mdmp File so here it is;
Comment: 'Crash: Map: d1_canals_01
Game: c:\program files\steam\steamapps\janerd\garrysmod\garrysmod
Build: 4104
Misc: skill:1 rate 20000 update 30 cmd 30 latency 0 msec
Net: loopback
cmdline:“c:\program files\steam\steamapps\janerd\garrysmod\hl2.exe” -game garrysmod -steam -dxlevel 81
driver: Driver Name: ATI RADEON XPRESS 200 Series
Driver Version: 6.14.10.6925
VendorId / DeviceId: 0x1002 / 0x5954
SubSystem / Rev: 0x2a21103c / 0x0
DXLevel: 8.1
Vid: 1024 x 768
video: picmip: 1 forceansio: 1 trilinear: 1 antialias: 0 vsync: 0 rootlod: 0 reducefillrate: 0
shadowrendertotexture: 0 r_flashlightdepthtexture 1 waterforceexpensive: 0 waterforcereflectentities: 1 mat_motion_blur_enabled: 0 mat_queue_mode 0
OS: XP Service Pack 2 (Build 2600) version 5.1
prev PP PAGES: used: 19849, free 72823
final PP PAGES: used: 19849, free 72823
memalloc = 0

Please help

[editline]02:50AM[/editline]

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[editline]02:50AM[/editline]