installation problem

[Александров Иван]

Hellow,my name is Ivan,i have installation problem 
configuration:
intel seleron Dual-core e3300 2.5/800/1mb BOX LGA775 BX80571E3300
ASUS P5KPL-AM SE Soket 775/iG31/DDR II/PCI-Ex16/Video/mAXT
DDR II 1024Mb PC-6400,800MHz Crucial (Micron)
160Gb Hitachi HDS721016LA386(0A39261)8MB SATA-II
Codegen Q3337-A2 ATX 400W
CD-ROM TOSHIBA (don't know 3 years old , HHD)

problem:
In various places errors occur when installing
8.0-RELEASE-i386-disc1.iso
8.0-RELEASE-i386-dvd1.iso.gz
and
FreeBSD-7.3-RELEASE-i386-disc1.iso
everywhere timeout
in 8.0-RELEASE-i386-dvd1.iso.gz for example:
ums0: 3 buttons and [XYZ] coordinates ID=0
acd0: TIMEOUT - READ_BIG retryin (1 retry left )
acd0: TIMEOUT - READ_BIG retryin (0 retries left )
acd0: FAILURE - READ_BIG timed out
cd0: TIMEOUT - READ_BIG retryin (1 retry left )
acd0: TIMEOUT - READ_BIG retryin (0 retries left )
acd0: FAILURE - READ_BIG timed out
cd0: TIMEOUT - READ_BIG retryin (1 retry left )
acd0: TIMEOUT - READ_BIG retryin (0 retries left )
acd0: FAILURE - READ_BIG timed out

I would like to begin the study with nix feeBSD very disappointing
Help please,bootable flash don't work too.
can you help me?
thanks