Help?

I'm not sure if this is the problem but I think my cpu is overheating and crashing a game I play called League of Legends. I use Game Booster while playing and this is some of what I got from it.

Razer Game Booster Diagnostics Report v1.0
Version: 3.5.2.4
Date: 2012/10/23 22:56:48

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01 - Operating System
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0101 - Operating System : Windows XP Home Edition (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.120821-1629)
0102 - Language : English (Regional Setting: English)
0103 - BIOS : Phoenix - Award BIOS v6.00PG
0104 - Processor : AMD Athlon(tm) 64 Processor 3400+, MMX, 3DNow, ~2.4GHz
0105 - Memory : 894MB RAM
0107 - Page File : 740MB used, 1427MB available
0108 - Windows Dir : C:\WINDOWS
0109 - DirectX Version : DirectX 9.0c (4.09.0000.0904)
0110 - DX Setup Parameters : Not found
0114 - DxDiag Version : 5.03.2600.5512

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02 - Processor
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0201 - Caption : AMD Athlon(tm) 64 Processor 3400+ ~2393MHz
0202 - Current Clock Speed : 2393MHz

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03 - Video Adapter
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0301 - Card Name : ATI RADEON XPRESS 200 Series
0302 - Manufacturer : ATI Technologies Inc.
0303 - Chip Type : ATI Radeon Xpress Series (0x5954)
0304 - DAC Type : Internal DAC(400MHz)
0305 - Device Key : Enum\PCI\VEN_1002&DEV_5954&SUBSYS_71411462&REV_00
0306 - Display Memory : 128.0 MB
0307 - AdapterRAM : 128.00 MB
0308 - Current Mode : 1024 x 768 (32 bit) (75Hz)
0309 - Monitor Name : Plug and Play Monitor
0310 - Driver Name : ati2dvag.dll
0311 - Driver Version : 6.14.0010.6925
0312 - Driver Language : English
0313 - DDI Version : 9 (or higher)
0315 - Driver Beta : False
0316 - Driver Debug : False
0317 - Driver Date : 2/10/2010 23:45:14
0318 - Driver Size : 325120
0319 - VDD : n/a
0320 - Mini VDD : ati2mtag.sys
0321 - Mini VDD Date : 2/11/2010 02:38:10
0322 - Mini VDD Size : 3565056
0323 - Device Identifier : {D7B71EE2-1A14-11CF-DF6C-4B51A1C2CB35}
0324 - Vendor ID : 0x1002
0325 - Device ID : 0x5954
0326 - SubSys ID : 0x71411462
0327 - Revision ID : 0x0000

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04 - Memory
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0401 - Total Memory : 894.48 MB
0402 - Free Memory : 96.06 MB
0403 - Total Pagefile : 2.12 GB
0404 - Free Pagefile : 1.39 GB

0405 - Bank Label : Bank0/1
0406 - Speed : 400 MHz
0407 - Total Width : 64 Bits
0408 - Capacity : 512.00 MB

0405 - Bank Label : Bank2/3
0406 - Speed : 400 MHz
0407 - Total Width : 64 Bits
0408 - Capacity : 512.00 MB

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05 - Network
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0501 - Description : Realtek RTL8139/810x Family Fast Ethernet NIC - Packet Scheduler Miniport

0501 - Description : Realtek RTL8139/810x Family Fast Ethernet NIC - Packet Scheduler Miniport

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06 - Motherboard
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0601 - Model : MS-7145
0602 - Manufacturer : MICRO-STAR

If that helps anything lol. I have 2 gigs of RAM ordered already and should arrive sometime soon.
Also It always says that my hard disk and stuff are always over 100 degrees. That can't be healthy... Doesn't sound anyways...

So if anyone could give any suggestions on how to cool it down or keep the game from crashing, that would be veryyyyy welcome.