The Intel® PRO/Wireless 2200BG Network Connection is a legacy adapter that has reached End Of Interactive support, it supports only 802.11b and 802.11g, in the 2.4 GHz spectrum.
We advise you check with the PC manufacturer Support to obtain the most recent drivers for your system. As second option, you can try the generic drivers from Intel Download Center, the last driver version released for this adapter on Windows XP* was 18.104.22.168.
Try applying the recommendation from the document: Quick Checks That Might Improve or Fix Connection Issues.
Also, refer to the documents available in the Intel® PRO/Wireless 2200BG Network Connection Support.