条件编译与分支代码

We have a project that needs to be build for both .Net 1.1 and 2.0 due to server compatibility issues (Windows Server 2000 and Windows Server 2003 production servers). I am looking for help making the decision between conditional compiliation or branching the code in source control. There are pros and cons for each. Thanks in advance.We have a project that needs to be build for bo