developping AntiVirus program suggestions

[mohfa]

Hi every body :
i'm planning to developpe an AntiVirus software using Delphi ,i need all your suggestions and directions .
except for the polymorphic viruses and the other complicated ones , is an antivirus software looks for a simple virus by comparing the Virus Signature with the infected File using a HexToStr function ?
i mean can i use the Function HexToStr to look for a simple virus signature in an infected File .
to give more details :
Let's suppose the following Virus Eicar Signature: 58354f2150254041505b345c505a58353428505e2937434329

to look in eicar.com file should i use simply the Function HexToStr to get this Virus or i must use other functions ?

need all your help and suggestions .


many thanks .