LinuxQuestions.org - Unable to install RHEL 5.4 in GUI mode in PC with dual care processor

Dear Sir,

I want know why I am unabe to install LINUX 5.4 in GUi mode on my pc.
My pc has following configuration:-

Host Name: CMC-29D7B8D670E
OS Name: Microsoft Windows XP Professional
OS Version: 5.1.2600 Service Pack 3 Build 2600
OS Manufacturer: Microsoft Corporation
OS Configuration: Standalone Workstation
OS Build Type: Multiprocessor Free
Registered Owner: cmc
Registered Organization:
Product ID: 76487-640-8365391-23632
Original Install Date: 12/28/2011, 2:27:33 PM
System Up Time: 0 Days, 0 Hours, 59 Minutes, 39 Seconds
System Manufacturer: System manufacturer
System Model: System Product Name
System type: X86-based PC
Processor(s): 1 Processor(s) Installed.
[01]: x86 Family 6 Model 23 Stepping 10 GenuineIntel ~3067 Mhz
BIOS Version: A_M_I_ - 5001116
Windows Directory: E:\WINDOWS
System Directory: E:\WINDOWS\system32
Boot Device: \Device\HarddiskVolume1
System Locale: en-us;English (United States)
Input Locale: en-us;English (United States)
Time Zone: (GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi
Total Physical Memory: 2,013 MB
Available Physical Memory: 1,314 MB
Virtual Memory: Max Size: 2,048 MB
Virtual Memory: Available: 2,009 MB
Virtual Memory: In Use: 39 MB
Page File Location(s): E:\pagefile.sys
Domain: WORKGROUP
Logon Server: \\CMC-29D7B8D670E
Hotfix(s): 386 Hotfix(s) Installed.
[01]: File 1
[02]: File 1
[03]: File 1
[04]: File 1

NetWork Card(s): 1 NIC(s) Installed.
[01]: Atheros AR8151 PCI-E Gigabit Ethernet Controller
Connection Name: Local Area Connection
DHCP Enabled: No
IP address(es)
[01]: 172.16.11.113
[02]: 192.168.1.141

Also Sir when I am intalling it in CUI Mode the system is unable to mount the hard disk.

Please tell me.

Thanks for reading it, helping myself in advance.

Aki Tomar